RELAYS FROM ATC DIVERSIFIED ELECTRONICS IN STOCK AT
MARSH ELECTRONICS
For complete specifications and pricing on Diversified products listed here or for a catalog,
please give us a call (920) 757-0800 or (800) 877-8919, or send us an e-mail.
| IN STOCK SERIES: | |
|---|---|
| ALTERNATE RELAY DUPLEXORS | ARA & ARB Series |
| AC GO/NO-GO CURRENT MONITOR/RELAYS | CMB Series CMG Series |
| AC OVER CURRENT MONITOR/RELAYS | CMO Series |
| AC UNDER CURRENT MONITOR/RELAYS | CMU Series |
| PHASE LOSS, UNDER VOLTAGE & PHASE SEQUENCE MONITOR/RELAYS | SLA Series |
| MICROPROCESSOR CONTROLLED THREE PHASE MONITOR/RELAYS | SLM Series |
| DELAY ON OPERATE/DELAY ON RELEASE (RELAY OUTPUT) | TDJ Series |
| INTERVAL ON OPERATE (RELAY OUTPUT) | TBB Series |
| TRUE DELAY ON RELEASE (RELAY OUTPUT) | TDT Series |
| UNITIMER PROGRAMMABLE TIME DELAY RELAY (RELAY OUTPUT) | TDU Series |
| SINGLE PHASE UNDER VOLTAGE MONITOR/RELAYS | UOA Series |
| SINGLE CHANNEL ISOLATION SWITCHES | ISO Series |
| OCTAL RELAY SOCKETS | RB08 RB11 |
ARA & ARB SERIES ALTERNATE RELAY DUPLEXORS
The Duplexor is used in control panels where two loads are required to alternate to provide equal run time on the loads. The alternating action is initiated by a control switch, which is common with one side of the control voltage. The output contacts will change states each time the control switch is opened, thus alternating the two loads. The LED indicators show the position of the output relay. The ARA series is the standard Duplexor providing automatic alternating sequence. The ARB has the automatic sequencing feature plus the option of locking it into one sequence. A three position switch permits the field selection of normal duplexing action, locking in the A-B sequence, or B-A sequence.Check Inventory
| Specifications | |
|---|---|
| Control Voltage: | 24, 120 VAC/DC, 208, 240 VAC, 50/60Hz, 48 VDC, ±10% |
| Control Switch Current: | 1 mA |
| Contact Rating: | 10 Amps @ 240 VAC Resistive 1/8 hp @ 120 VAC 1/4 hp @ 240 VAC Inductive 360 VA @ 240 VAC, Inductive |
| Power Required: | 3 VA (Approximately) |
| Temperatures: | Operate: –20°C to +55°C Storage: –45°C to +85°C |
| Duty Cycle: | Continuous |
| Life Expectancy: | Mechanical: 10,000,000 Operations (Minimum) Electrical: 100,000 Operations @ Rated Load |
| Indicators: | LED Shows Output Position |
| Enclosure Style: | ‘A’ Lexan® Dust Cover |
| Terminations: | Industrial Plug-in |
| Agency Approval: | UL and Canadian UL; Recognition; File #E55826 |
AC Go/No-Go Current Monitor/Relays
CMB Series
The CMB Series relay is used to detect the presence of AC current. When the monitored current exceeds the trip point for longer than 30 milliseconds, the internal relay energizes. When the monitored current drops below the trip point for longer than 0.5 seconds, the internal relay de-energizes. The Delay-on-Release is incorporated to prevent nuisance tripping caused by momentary dips in the load line. An External CT may be used to extend the range of the Current Monitor.Features:- No physical connection to the AC line that is being monitored
- Magnetically coupled by passing supply line through protruding Current Transformer
- Heavy Duty Contacts
- 8 Pin, Plug-in
- Low Cost
- Easy Installation
- UL Recognized, Canadian Recognized
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| Specifications | |
|---|---|
| Control Voltage: | 24 or 120 VAC; 50/60 Hz, 24 VDC |
| AC Input Current: | Up to 50 Amps |
| Trip Point: | 1–10 Amps, Fixed |
| Response Times: | Operate: 30 Milliseconds Release: 0.5 Seconds |
| Temperatures: | Operate: 0°C to +55°C Storage: –45°C to +85°C |
| Power Consumption: | 3 Watts (Approximately) |
| Output: | SPDT, 10 Amps @ 240 VAC Resistive 211 VA @ 120 VAC Inductive 1/6 Horsepower @ 120 VAC or 1/3 Horsepower @ 240 VAC |
| Life Expectancy: | Mechanical: 10 Million Operations (Minimum) Electrical: 100,000 Operations @ Rated Load |
| Duty Cycle: | Continuous |
| Enclosure: | Lexan Dust Cover; 8 pin plug-in |
| Agency Approval: | UL Recognized: |
| Canadian Recognized: | File #E5582624 VDC not recognized |
CMG SERIES
The CMG Series is a self powered Current Monitor/Relay that is used to detect the presence of AC current. When the monitored current exceeds the trip point for longer than 400 mSec., the internal relay energizes (pick up).When the monitored current drops below the trip point for longer than 50 mSec., the internal relay de-energizes (drop out). No physical connection is required as the line to be monitored is magnetically coupled by passing the conductor through the protruding Current Transformer of the monitor. No external supply is needed to power the monitor. The current trip point specified is with one turn through the transformer. Each time the number of turns through the transformer doubles, the trip point effectively halves. Example: CMG-0100-20 will trip at 20 amps with one turn passing through the transformer. By placing two turns through the transformer, the relay will trip at 10 amps. Likewise, four turns will cause the relay to trip at 5 amps.Features:
- No physical connection to the AC line that is being monitored
- Magnetically coupled by passing supply line through protruding Current Transformer
- Withstands 700% of rated current
- No supply voltage required
- Will operate on 24, 120, 240 or 480 VAC lines
- Easy installation
- 1/4" quick disconnect terminals
- UL Recognized, Canadian Recognized
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| Specifications | |
|---|---|
| Control Voltage: | Not Required |
| Trip Points: | Pick up: Depends on Model. Request more info. Drop Out: 25% below pick up |
| Hysteresis: | 25% |
| Response Times: | Operate: 400mSec. (Approximately) Release: 50mSec. (Approximately) |
| Temperatures: | Operate: 0°C to +55°C Storage: –45°C to +85°C |
| Output: | SPST - N.O., 5 Amps @ 240 VAC, Resistive |
| Accuracy: | ±5% on Pick-up |
| Reset: | Automatic |
| Enclosure: | Style “D” Surface Mounted |
| Terminations: | (2) 1/4" Quick Disconnect Terminals |
| Agency Approval: | UL Recognized |
| Canadian Recognized: | File #E55826 |
CMO Series AC Over Current Monitor/Relays
The CMO Series is used to detect over current conditions. The internal relay energizes (pick up) when the monitored current exceeds the preset trip point for longer than the adjustable time delay. The delay is incorporated to prevent nuisance tripping caused by motor inrush currents. The CMO has an automatic reset feature. The internal relay de-energizes (drop out) when the current drops 5% below the preset trip for longer than 0.2 seconds. An External CT may be used to extend the range of the Current Monitor.Check Inventory
| Specifications | |
|---|---|
| Control Voltage: | 24 or 120 VAC/VDC; 50/60 Hz |
| Trip Points: | Pick up: Depends on Model. Request more info. Drop out: 5% below pick up |
| Hysteresis: | 5% |
| Response Times: | Operate: 0.1 to 5 Seconds, Adjustable Release: 0.2 Seconds |
| Temperatures: | Operate: 0 C to +55 C Storage: 45 C to +85 C |
| Reset: | Automatic |
| Output: | DPDT, 10 Amps @ 120 VAC, Resistive |
| Indicator: | LED Glows On Over Current (Style E Enclosure Only) |
| Enclosure: | Style A: Lexan Dust Cover; 11-pin Plug-in Style E: Lexan Surface Mounted:#8-32 Screw Terminals |
CMU Series AC Under Current Monitor/Relays
The CMU Series is used to detect under current conditions. The internal relay is energized (pick up) when the monitored current is above the preset trip point. The relay de-energizes (drop out) when the current falls below the trip point for longer than the adjustable delay. The delay is incorporated to prevent nuisance tripping caused by momentary line dips. The relay re-energizes when the current rises 5% above the drop out trip point for longer than 0.1 seconds. The relay has the automatic reset feature. An external CT may be used to extend the range of the Current Monitor.Check Inventory
| Specifications | |
|---|---|
| Control Voltage: | 24 or 120 VAC, 50/60 Hz; 24 VDC |
| Trip Points: | Pick up: 5% above drop out Drop out: Depends on Model. Order more info. |
| Hysteresis: | 5% |
| Response Times: | Operate: 0.1 Seconds Release: 0.1 to 5 Seconds, Adjustable |
| Temperatures: | Operate: 0°C to +55°C Storage: –45°C to +85°C |
| Reset: | Automatic |
| Output: | DPDT, 10 Amps @ 120 VAC, Resistive |
| Indicator: | Glows When Current is Above Preset Current Trip Point (Style E Enclosure Only) |
| Enclosure: | Style A: Lexan Dust Cover; 11-pin Plug-in Style E: Lexan Surface Mounted: #8-32 Screw Terminals |
SLA Series Phase Loss, Under Voltage and Phase Sequence Monitor/Relays
Diversified Phase Monitors operate independently of motor size or power requirements of the system. Some typical applications follow:• Air Handlers • Computer Power Protection
• Conveyor Drive • Water Waste & Sewage Machinery
• Oil & Gas Pumps • Sawmill & Woodpump Machinery
• Elevator Drives • Robotics Equipment
• Automatic Transfer Switching for Irrigation Pumps Emergency Power Supplies
• Power Substation Monitoring • Commercial/Industrial Air Conditioning
• Lift Station Pumps & Refrigeration Compressors
The SLA Series is designed to protect three-phase equipment against Phase Loss, Under Voltage, and Phase Reversal conditions. With normal operating voltages applied in the proper ABC sequence, the internal relay will energize (PICK-UP). When incorrect phase sequence or phase loss occurs or the three-phase voltages fall below the drop out voltages, the relay will de-energize (DROP-OUT). Both Delta and Wye systems may be monitored. In Wye systems, connections to neutral are not required. For UL Listed units, with field wiring terminals, copper wire with 60°/75°C rating must be used for control circuitry connections. On models featuring indicators, the LED glows when all line conditions are normal. • Conveyor Drive • Water Waste & Sewage Machinery
• Oil & Gas Pumps • Sawmill & Woodpump Machinery
• Elevator Drives • Robotics Equipment
• Automatic Transfer Switching for Irrigation Pumps Emergency Power Supplies
• Power Substation Monitoring • Commercial/Industrial Air Conditioning
• Lift Station Pumps & Refrigeration Compressors
NOTE: When a phase is lost while the motor is running, a condition known as regeneration occurs where a voltage is induced into the open phase nearly equal in magnitude to the normal phase-to-phase voltage. However, with the exception of lightly loaded motors, enough change is detected by the SLA to provide the required protection when properly adjusted.
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| Specifications: | |
|---|---|
| Dropout Voltage: | 1 Ø Low: 83% of Nominal3 Ø Low: 90% of Nominal |
| Response Times: | Models Up to 300 VAC Operate: 250 Milliseconds Release: 0.5 Seconds Models Over 300 VAC |
| Operate: 1.0 Seconds Release: 2.0 Seconds | |
| Temperatures: | Operate: 0°C to +55°CStorage: -45°C to +85°C |
| Phase Sequence: | ABC (Will Not Operate CBA) |
| U.S. Patent Number: | 3,611,050 |
SLM Series Microprocessor Controlled Three Phase Monitor/Relays
| Protects Against | Features |
| PHASE LOSS | FAULT INDICATORS |
| UNDER VOLTAGE | EXTERNAL ADJUSTMENTS |
| OVER VOLTAGE | AUTO/MANUAL RESET |
| PHASE UNBALANCE | DELAY-ON-MAKE |
| PHASE REVERSAL | LAST FAULT MEMORY |
| FREQUENCY SHIFT | DPDT CONTACTS |
| PHASE SHIFT LOW | POWER CONSUMPTION |
| UNIFORM RESTART IN MULTIPLE LOAD INSTALLATIONS | COMPACT PACKAGING |
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| Specifications: | |
|---|---|
| Phase Sequence: | ABC (Will Not Operate CBA) |
| Voltage Trip Points: | Drop -Out: ±10% of Setting Pickup: ±7% of Setting |
| Frequency Trip Points: | Dropout: ±4% of 60 Hz (380 V, 50 Hz) Pickup ±3% of 60 Hz (380 V, 50 Hz) |
| Unbalance Trip Points: | Dropout: 7%Pickup: 5% |
| Output Rating: | DPDT, 360 VA Inductive; 1/2 hp 3 A Resistive @ 600 VAC |
| Response Times Operate: | Sampling: 2 Seconds Delay-on-make: (Sampling Delay) + (1.5 seconds to 5 minutes Delay). Adjustable in one (1) minute increments |
| Release: | Under/Over Voltage & Frequency Shift:1.5 Seconds, (Approx.) Unbalance: 2.0 Seconds, (Approx.) Phase Loss/Shift: 1.0 Seconds, (Approx.) |
| Reset Modes: | Automatic; Manual; Automatic w/Memory |
| LED Indicators: | Green/Red |
| Power Required: | 7 VA Typical |
| Transient Withstand: | 2500 Volts for 10 ms |
| Temperatures: | Operate: 0°C to + 55°C Storage: -45°C to +85°C |
| Enclosure: | Lexan Surface Mounted |
| Terminations: | #8-32 Screw Terminals |
| Agency Approvals: | UL Listed: File #E55826; CSA Certified; File #LR40123 |
TDJ Series Delay on Operate/Delay on Release (Relay Output)
Voltage is continuously applied to the input. An external isolated switch controls the timer. When closed, the Delay On Operate delay T1 begins. Upon completion, the relay energizes. When the switch opens, the Delay on Release delay T2 begins. Upon completion, the relay de-energizes and the cycle is complete. Reset is accomplished by reclosing the control switch after the timing cycle has completed. If the switch opens during the Delay on Operate mode, the relay will remain de-energized and T1 will reset. If the switch is reclosed during the Delay on Release mode, the relay will remain energized and T2 will reset. Both delay periods are independently adjustable.Check Inventory
| Specifications | |
|---|---|
| Supply Voltages: | 24 or 120 volts, AC 50/60 Hz, or DC; –10% |
| Timing Ranges: | Virtually unlimited. |
| Timing Tolerances: | Minimum Setting: +0 20% Maximum Setting: –10% |
| Repeatability: | 1% maximum; no first cycle effect |
| Output Rating: | DPDT, 10 Amps @ 250 VAC or 24 VDC, Resistive 211 VA @ 120 VAC, Inductive |
| Temperatures: | Operate: 0° C to +55° C Storage: 45° C to +85° C |
| Reset Times: | Before Time Out: 100 m. seconds After Time Out: 50 m. seconds |
| Recycle Time: | 40 m. seconds |
| False Transfer: | No |
| Reverse Polarity Protected: | Yes |
| Power Consumption: | 3 watts (approx.) |
| Life Expectancy: | Mechanical: 10 Million Operations (min.) Electrical: 100,000 Operations @ Rated Load |
| Agency Approval: | UL Recognized; File #E55826 |
TBB Series Interval On Operate (Relay Output)
When control voltage is applied to the input terminals, the relay energizes and the time delay begins. Upon completion of the delay period, the relay de-energizes. Reset during or after the delay period is accomplished by removal of the control voltage.Digital selection of the time delay is accomplished by the use of ten (10) binary switches, each marked with a time increment. The time periods, of which there are five (5) ranges, represented by each switch in the ON position is added together to obtain the desired time delay. No more trial-by-error adjustments.
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| Specifications | |
|---|---|
| Control Voltage: | 12, 24, 48, 120, or 240 volts AC, 50/60 Hz, or DC ±10% |
| Time Delay Range: | Order More Info |
| Accuracies: | Setting: ±2% or ±50 Milliseconds Whichever is Greater Repeat: 60.1% or ±8.3 Milliseconds Whichever is Greater |
| Reset Time: | Before Time Out: 100 m. seconds After Time Out: 50 m. seconds |
| Output: | 10 Amps @ 250 VAC or 24 VDC, Resistive |
| Temperatures: | Operate: 0°C to +55°C Storage: –45°C to +85°C |
| False Transfer: | No |
| Reverse Polarity Protected: | Yes |
| Power Consumption: | 3 watts (approximately) |
| Duty Cycle: | Continuous |
| Life Expectancy: | Mechanical: 10 Million Operations (minimum) Electrical: 100,000 Operations @ Rated Load |
| Indicators: | LED Glows when Relay is Energized |
| Isolation: | 1,500 Volts, Input/Output |
| Agency Approvals: | UL Recognized; File #E55826 CSA Certified; File #LR40123 |
TDT Series True Delay on Release (Relay Output)
When voltage is applied to the input terminals, the relay energizes. When voltage is removed, the OFF delay begins. Upon completion of the delay period, the relay de-energizes. Reset is accomplished by reapplying voltage to the input terminals.Check Inventory
| Specifications | |
|---|---|
| Supply Voltages: | 24, 110/120 or 208/240 volts, AC 50/60 Hz, or DC; and 48 volts DC; +10% |
| Timing Ranges: | Up to 300 seconds |
| Timing Tolerances: | Minimum setting: +0 – 20%Maximum Setting: ±10% |
| Repeatability: | 1% |
| Output Rating: | DPDT, 10 Amps,1/6 HP @ 240 VAC; 211 VA @ 120 VAC, Inductive |
| Temperatures: | Operate: 0°C to +55°CStorage: –45°C to +85°C |
| Reset: | 0.5 seconds |
| False Transfer: | No |
| Reverse Polarity Protected: | Yes |
| Power Consumption: | 3 watts (approx.) |
| Life Expectancy: | Mechanical: 10 Million Operations (min.)Electrical: 100,000 Operations @ RatedLoad |
| Agency Approval: | UL recognized; File #E55826 |
TDU Series – Unitimer Programmable Time Delay Relay (Relay Output)
The TDU Series is the most versatile single timer available today. One (1) model replaces forty (40) industry standard devices: four (4) wide delay ranges x five (5) most common modes of operation x two (2) supply voltages — since they will operate on both AC and DC.The CMOS digital circuitry provides high accuracy, repeatability and fast reset times. The heavy-duty relays are rated for continuous operation at 10 amps. All programming is easily accomplished externally by using one or more jumpers between signated base pins — no trap doors to open, no switches to set, no disassembly required.Check Inventory
| Specifications | |
|---|---|
| Supply Voltages: | 24, 120 or 240 volts AC, 50/60 Hz 12, 24, 48 or 110 volts, DC; ±10% |
| Operating Modes: | 1. Interval on Operate 2. Delay on Operate 3. Delay on Release 4. Single Shot 5. Flasher |
| Timing Ranges: | 1. 0.15 to 15 seconds 2. 0.6 to 60 seconds 3. 5 to 480 seconds 4. 0.6 to 64 minutes |
| Timing Tolerances: | Minimum Setting: +0 – 20% Maximum Setting: ±10% |
| Repeatability: | 0.1% typical; 0.5% maximum |
| Output Rating: | SPDT, 10 Amps @ 24 VDC or 250 VAC, Resistive 211 VA @ 120 VAC, Inductive |
| Temperatures: | Operate: 0°C to +55°C Storage: –45°C to +85°C |
| Reset Times: | Before Time Out: 100 m. seconds After Time Out: 50 m. seconds Recycle: 40 m. seconds |
| False Transfer: | No |
| Reverse Polarity Protected: | Yes |
| Power Consumption: | 3 watts (approx.) |
| Life Expectancy: | Mechanical: 10 Million Operations (min.) Electrical: 100,000 Operations @ Rated Load |
| Agency Approval: | UL Recognized; File #E55826 |
UOA Series Single Phase Under Voltage Monitor/Relays
The UOA Series offers protection to single phase equipment that is required to operate above a certain voltage minimum. With Operating voltage applied above the preset pickup voltage, the internal relay will energize. When the voltage falls below the preset dropout voltage for a period longer than the release delay, the output relay will de-energize. When line conditions return above the preset pickup voltage, the UOA Series automatically resets and the internal relay energizes. The hysteresis in each unit provides a differential between the pickup and dropout trip points.Check Inventory
| Specifications | |
|---|---|
| Response Times: | Operate: 50mSec. (Approx.) (500 mSec. on 12 VDC units) Release: 0.5 Seconds (Approx.) |
| Output Rating: | Style A - DPDT, 5A @ 240 VAC, Resistive: 211 VA @ 240, Inductive. Style N- SPDT, 10A @ 240 VAC, Resistive; 345 VA @ 240 VAC, Inductive. Style E - DPDT, 5A @ 240 VAC Resistive: 345 VA @ 240 VAC, Inductive. |
| Temperatures: | Operate: 0°C to +55°C Storage: -45°C to +85° |
| Power Required: | Models Up to 110 VDC: 3 Watts, Maximum Models Up to 300 VAC: 5 VA, Maximum Models Over 300 VAC: 5 VA, Maximum |
| Agency Approval: | UL Recognized File #E55826 |
OCTAL RELAY SOCKETS
RB08
Recommended for use with all 8 pin octal plug-in devices. UL Recognized and CSA Certified for 10 Amps @ 600 VAC. The molded thermoplastic base has brass, nickel plated inserts with #6-32 steel, nickel plated screws.RB11
Recommended for use with all 11-pin magnal plug-in devices. UL Recognized and CSA certified for 10 Amp @ 300 VAC. The molded thermoplastic base has brass, nickel plated inserts with #6-32 steel, nickel plated screws.ISO Series Single Channel Isolation Switches
The ISO Series single channel devices are used to provide a safe and reliable means of controlling loads from hazardous locations without releasing sufficient energy, under normal or abnormal conditions, to cause ignition of a flammable or combustible atmospheric mixture while in its most easily ignited concentration. An isolated output turns on when the control switch input from the hazardous location is closed. When the control switch input opens, the isolated output turns off. The Style A single channel plug-in devices come equipped with integral spring mating clips which secure the device to the base make this unit the only UL913 Intrinsically Safe plug-in associated apparatus available on the market today. The Style N, surface mounted enclosure is sealed with a high quality epoxy resin material and has five (5) #8-32 screw terminals.Check Inventory
| Specifications | |
|---|---|
| Control Voltage: | 24 or 120 VAC, ±10%, 50/60 Hz |
| Control Switch: | Open Circuit Voltage: 16 VDC Short Circuit Current: 200 uAmps |
| Contact Rating: | SPST-N.O., 10 amps @ 24 or 120 VAC, Resistive 278 VA, Inductive |
| Isolation: | 2500 volts, Input to Output |
| Power Required: | 1.5 VA |
| Temperatures: | Operate: –20°C to +55°C Storage: –40°C to +85°C |
| Response Times: | Operate: 6 mSeconds (Approx.) Release: 2.5 mSeconds (Approx.) |
| Life Expectancy: | Mechanical: 20 Million Operations Electrical: 50,000 Operations @ Rated Load |
| Duty Cycle: | Continuous |
| LED Indicator: | On When Output is On |
| Agency Approvals: | UL913 File #E151578; Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III, Hazardous Locations in ATC-DE; Drawing Nos. 191, 192 |
Items shown on this page represent only our stocking items.
If you don't find what you are looking for, please give us a call.
Prices subject to change without notice.
Marsh Electronics, Inc.
N1042 Tower View Drive • Greenville, WI 54942
(920) 757-0800 • (800) 877-8919 • Fax (920) 757-0804
Questions? e-mail us.