Honeywell MR-101/T — MR-100 Series multi-voltage control relay, one SPDT position, track mounted, built by Air Products and Controls.
Life safety and building control panels need an isolated dry contact to pass an event to equipment outside the panel: fan shutdown, damper control, door release or elevator recall. This relay provides one, with a coil that accepts any of four common supply voltages.
- One module position with SPDT dry Form C contacts
- Coil takes 18 to 35 VDC, 18 to 35 VAC, 120 VAC or 230 VAC, set by which terminal is wired; DC input is polarized
- Coil current 18 mA per position on MR-100 Series units
- Contacts rated 10 A at 120 VAC, 1/6 HP normally open and 1/8 HP normally closed, plus 7 A at 28 VDC and at 230 VAC
- Red LED confirms the coil is energized; relays rated for 10,000,000 mechanical operations
- 3 1/4 in. H × 2 1/8 in. W × 1 1/2 in. D, supplied with a 3 1/2 in. wide snap track
The suffix is the whole difference: /C is the same relay in a dust-resistant enclosure, /C/R adds a red cover for New York City, MR-104/T is the four-position version, and MR-201/T is the DPDT relay.
