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The black wire on the primary side of the transformers is labeled "COM" because it is the common to all of the voltage inputs available in a transformer with a multi-input primary. It does not mean "neutral" or "ground".
The RIB2401B is listed for use under UL916 (Energy Management Equipment) and UL864 (Control units and Accessories for Fire Alarm Systems). The ESR2401B is listed for use under UL924 (Emergency Lighting and Power Equipment).
We no longer manufacture contactors.
Both units have SPST contacts that are activated when the load line current exceeds the current sensors threshold. However, the RIBXGH series contacts are meant to pass 120Vac at 1 Amp (maximum); while the RIBXG series contacts can be used as a dry-contact output, or can pass up to 30Vac/dc at 0.4 Amps (maximum).
Our self-enclosed RIB relays can be used outside as long as they are housed in a NEMA 4 or NEMA 4X rated enclosure. A few of our models (RIBU1C, RIB2421C, RIB2401D, RIB2402D) are available in a NEMA 4X housing (add "-N4" to the end of the model name.)
You may contact us at 800-888-5538 to find out about distributors in your area, or click here to use our interactive map.
Give us a call at 800-888-5538 and ask for our Sales Department. They can provide you with pricing and availability, as well as a list of your local distributors.
Try the RIB Product Selection Guide on our website. Or, give us a call at 800-888-5538 (yes that's three answers in a row that basically say to call us ... what's can we say? We like talking to you!) and ask for a Technical Support Specialist.
No, the RIBXGTA does not need an external power supply. It uses the current flowing through the monitored load line to derive its power.
Most of our RIB products are rated for operation from -30° F to +140° F. Please check the individual cut sheet for the model of interest.
No, our transformer secondaries are ungrounded, isolated outputs.
Our one-year warranty policy is available on our Downloads page. However, we've prepared a direct download link, just for you. Because we care.
We send out our last shipping order at 4:00 PM Eastern time.