Resideo - Honeywell Home RC840T-240 Electric Heating Relay

Resideo - Honeywell Home RC840T-240 Electric Heating Relay is an AC operated control that switches heating circuits with a 24V AC coil. Designed for 240V AC at 60 Hz, this relay supports 12 A full load, 42 A locked rotor, and 22 A resistive load, making it ideal for electric heating and boiler applications. UL-approved for both US and Canada, it performs reliably across a wide temperature range (-4 to 140°F) and humidity levels from 0 to 95% RH. The compact unit features 2-9/32" W x 1-13/32" D x 7-1/8" H dimensions and 12 AWG terminals for secure wiring.

Key features:

• Coil voltage: 24 VAC
• Contact voltage rating: 240 VAC at 60 Hz
• Current ratings: 12 A full load, 42 A locked rotor, 22 A resistive load
• Inductive load capability: 0.8 HP at 240 VAC
• Switching mode: ON/OFF
• Control signal rating: 1.2 VA, 40 mA
• Terminal type: 12 AWG wire
• Approvals: UL (US and Canada)
• Transformer compatibility: Includes 22 A at 120 V AC transformer
• Environmental range: 0–95% RH humidity; -4 to 140°F operating temperature