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SPM Temperature Switch Relay
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SPM Temperature Switch Relay
  • Monitors Normally-Closed Temperature Switch
  • Relay Energizes and Latches when Temperature Switch Opens
  • Optional LED’s Indicate Normal and Fault Conditions
Product Detail:
The non-volatile latching temperature switch relay monitors a
normally-closed-low temperature switch. It incorporates a bistable relay that retains its state during power failures. LEDs indicate the status of the relay, and connections for an external reset button are provided for manual control. The reset inputs of multiple units may be connected to a single push button as long as proper polarity is observed when making the connections. Under normal conditions the temperature switch is closed and the relay is de-energized. When the temperature switch opens, the relay energizes and latches on until the temperature switch re-closes and the reset button is pressed. The unit will function properly with zero to 2k Ω of resistance in series with the temperature switch.SPM Series Temperature Switch Relay
Part Numbers:
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SPM
120
Contacts
ACA
SPDT Contacts
DPDT Contacts
ADA
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Specifications:
Control Voltage 120 VAC, 50/60 Hz
Power Required 2 VA
Duty Cycle Continuous
Contact Rating SPM-120-ACA SPST, 10A @ 250 VAC, Resistive, 360 VA Ind.
SPM-120-ADA DPDT, 10 A @ 250 VAC Resistive, 360 VA Ind.
Response Times Operate 10 ms (approximately)
Release 1 sec (approximately)
Life Expectancy Mechanical 30 Million Operations
Electrical 50,000 Operations @ Rated Load
Indicators SPM-120-ACA Green LED illuminates under normal conditions;
Red LED illuminates under fault conditions
SPM-120-ADA None
Temperature Switch Voltage 12 VDC
Current 2 mA max.
Temperature Rating Operate -4° to 131°F
(-20° to 55°C)
Storage -40° to 185°F (-40° to 85°C)
Enclosure 11-Pin plug-in “A” style enclosure
Weight 8 oz.