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Building Automation and HVAC Controls

Low-Input / Optoisolated Relays

The optoisolated series of relays may be used when the controller does not have sufficient coil drive power available to energize a relay of the desired contact rating. The power to energize the relay can be brought to the relay on a separate pair of wires along with the control output of the controller, or can be a local power source near the relay.

The voltage output of the controller is used to turn on an optoisolator that connects the power source to the coil of the relay. The optoisolator isolates the Class 2 output of the controller from potential feedback and voltage transients. Using this approach, an LED output, or low current analog output, of a controller can be used to control up to a double pole 20 Amp relay with a 3 horsepower rating. Optoisolated relays are available in T and Panel style.

Enclosed

Model # Description
RIBTE01BEnclosed Relay Hi/Low sep 20Amp SPDT 120Vac power + 5-30Vac/dc control
RIBTE01PEnclosed Relay Hi/Low sep 20Amp DPDT 120Vac power + 5-30Vac/dc control
RIBTE01SBEnclosed Relay Hi/Low sep 20Amp SPST + Override 120Vac power + 5-30Vac/dc
RIBTE02BEnclosed Relay Hi/Low sep 20Amp SPDT 208-277Vac power + 5-30Vac/dc control
RIBTE02PEnclosed Relay Hi/Low sep 20Amp DPDT 208-277Vac power + 5-30Vac/dc control
RIBTE02SBEnclosed Relay Hi/Low sep 20Amp SPST + Override 208-277Vac power + 5-30Vac/dc
RIBTE24BEnclosed Relay Hi/Low sep 20Amp SPDT 24Vac/dc power + 5-30Vac/dc control
RIBTE24PEnclosed Relay Hi/Low sep 20Amp DPDT 24Vac/dc power + 5-30Vac/dc control
RIBTE24SBEnclosed Relay Hi/Low sep 20Amp SPST 24Vac/dc power + 5-30Vac/dc control
RIBTELCEnclosed Relay Hi/Low sep 10Amp SPDT 10-30Vac/dc power + 5-30Vac/dc control
RIBTELSEnclosed Relay Hi/Low sep 10Amp SPST + Override 10-30Vac/dc power + 5-30Vac/dc

Track Mount

Model # Description
RIBME2401BPanel Relay 4.00x2.05in 20Amp SPDT 24Vac/dc/120Vac power + 5-30Vac/dc control
RIBME2401PPanel Relay 4.00x3.10in 20Amp DPST 24Vac/dc/120Vac power + 5-30Vac/dc control
RIBME2401SBPanel Relay 4.00x2.55in 20Amp SPST + Override 24Vac/dc/120Vac power + 5-30Vac/dc
RIBME2402BPanel Relay 4.00x2.05in 20Amp SPDT 24Vac/dc/208-277Vac power + 5-30Vac/dc contro
RIBME2402PPanel Relay 4.00x3.10in 20Amp DPST 24Vac/dc/208-277 power + 5-30Vac/dc control
RIBME2402SBPanel Relay 4.00x2.55in 20A SPST + HOA 24Vac/dc/208-277Vac + 5-30Vac/dc control