Honeywell R841C1227/U Electric...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$244.40
$194.40
Honeywell R841C1227/U Electric Heater Relay W. SPST Switching

Honeywell R841C1227/U Electric Heater Relay W. SPST Switching

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Model: R841C1227/U
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$244.40
$194.40
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Electric Heater Relay W. SPST Switching

  • Features

    • Mount in any position.
    • Contacts make and break in about 75 seconds.
    • Operate with each cycle of the thermostat (4 to 6 cycles per hour).
    • Each relay switches up to a 5,000 W load.
    • Includes 1/2 in. (13 mm) male conduit bushing.


R841C1227/U - spec sheet

Manufacturer Resources

Product Specs

Approvals Canadian Standards Association:
Certified
Approvals Underwriters Laboratories Inc :
UL Listed
Coil Ratings Voltage:
24 V
Contact Ratings Afl :
7.0 A @ 208 Vac, 240 Vac, 277 Vac; 14 A @ 120 Vac
Contact Ratings Alr :
42 A @ 208 Vac, 240 Vac, 277 Vac; 84 A @ 120 Vac
Contact Ratings Resistive :
22 A @ 120 Vac, 208 Vac, 240 Vac; 19 a @ 277 Vac
Dimensions In :
3 7/8 in. high x 2 13/16 in. wide x 1 1/2 in. deep
Dimensions Mm :
98 mm high x 71 mm wide x 38 mm deep
Electrical Connections:
Leadwires
Frequency:
50 Hz; 60 Hz
Item Type:
Product
Switching:
SPST
Temperature Ratings C :
-29 C to +66 C
Temperature Ratings F :
-20 F to +150 F
Tradeline Value:
Tradeline

Honeywell R841C1227/U – Frequently Asked Questions

1) Will the Honeywell R841C1227/U work with a 24V thermostat?
Yes. The R841C1227/U relay has a 24 V coil, so it drops straight into a standard low-voltage thermostat circuit and cycles with the thermostat, typically 4 to 6 times an hour. The coil works on both 50 Hz and 60 Hz supply.
2) Is the R841C SPST relay enough for a two-stage or two-circuit electric heater?
No. The R841C1227/U switches SPST, one set of contacts, one heat circuit up to 5,000 W. If the heater has two elements or two circuits that need to be broken separately, you need one relay per circuit or a multi-pole model from the R841 family. Wire each relay coil to the stage that controls it.
3) Does this Honeywell heater relay have to be mounted upright?
No, mount it in any position. That matters in tight baseboard cans and heater end pockets where there is no room to keep a relay vertical. Body size is 3-7/8 in. high x 2-13/16 in. wide x 1-1/2 in. deep (98 x 71 x 38 mm), so check the cavity before you commit.
4) How does the R841C1227/U connect, and does it come with a conduit fitting?
Connections are leadwires, not screw terminals, so you splice into the heater wiring with wire nuts. A 1/2 in. (13 mm) male conduit bushing is included for mounting through a knockout in the heater can or a box.
5) Why is there a delay before the heater comes on with this relay?
That is normal and by design. The R841C1227/U contacts make and break in about 75 seconds after the thermostat calls or satisfies. The slow transfer softens the inrush on resistance heat and smooths cycling. If a tenant reports the baseboard is slow to respond, this is the relay working as built, not a fault.
6) Can this relay be installed in an unheated space like a garage, attic or crawlspace?
Yes, within limits. The R841C1227/U is rated from -20 F to +150 F (-29 C to +66 C), which covers unconditioned attics, garages and crawlspaces in most climates. Watch the upper end if it sits inside a heater enclosure near the elements.
7) Is the Honeywell R841C1227/U UL listed and approved for use in Canada?
Both. The relay is UL Listed and Canadian Standards Association certified, which covers inspection on jobs on either side of the border. It is also a Tradeline part, Honeywell's contractor replacement line.
8) What part number do I order to standardize electric heat relays across a building?
Order Honeywell R841C1227/U. It is a single-configuration part, 24 V coil, SPST, leadwire connections, so there is no handing, no voltage suffix and no options to specify. Buying the same number for every unit keeps one spare on the truck good for any opening in the fleet.
How fast can I get the Honeywell R841C1227/U delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Honeywell R841C1227/U come with a warranty?
Absolutely. The Honeywell R841C1227/U is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Honeywell R841C1227/U?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Honeywell R841C1227/U from ZenSupply?
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