The RA89A1074 is a switching relay from Resideo (Honeywell Home), 24 V.
A relay lets a small control signal switch a much larger load. The thermostat or control board energizes a coil; the coil pulls contacts closed; the contacts carry the current that runs a blower, a circulator or an electric heat element. Nothing on the thermostat side ever sees line voltage.
Match the coil voltage and the contact rating to what you are replacing. A relay with the right coil but an undersized contact will work on the bench and weld shut in service.
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Brand: Resideo (Honeywell Home)
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Manufacturer Part #: RA89A1074/U
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Type: Switching relay
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Voltage: 24 V
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Shipping weight: 2.4 lb
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Category: Switching Relays
Full Specifications
| Application |
SPST switching of a line voltage device from a low voltage controller |
| Product Features |
Integral transformer provides low voltage power for control circuit |
| Approvals and Standards |
UL Listed: File No. E4436, Guide No. XAPX, CSA Certified: File No. LR1620 |
| Includes |
Integral transformer, Enclosure |
| Coil Connection Type |
Control Circuit 2 Wire |
| Number of Poles |
1 Pole |
| Power Supply Frequency |
50 Hz, 60 Hz |
| Switch Action |
SPST |
| Warranty |
1 Year |
| Product Height |
5.25 in, 133 mm |
| Product Length |
2.31 in, 59 mm |
| Product Width |
4.25 in, 108 mm |
Documents & Downloads
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Installation Instructions for R182J, R482J, R845A, R847A, RA89A, RA832A Switching Relays (English, French) (1.6MB PDF)
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Installation Instructions for R182J, R482J, YHR845A, R847A, RA89A, RA832A Switching Relays (English) (0.1MB PDF)
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Product Data for R182J, R482J, R845A, R847A, R882J, RA832A, RA89A Switching Relays (English) (1.5MB PDF)