
Resideo R4222D1021 Relay
The Resideo R4222D1021 Relay is a heavy-duty DPDT switching relay engineered for refrigeration, air conditioning, and industrial automation equipment. Designed with a 208/240Vac coil rating, this general-purpose relay provides dependable control for high-voltage loads including motors, compressors, and fan circuits. The laminated magnet construction increases operational efficiency, while the untaped coil design ensures cooler running temperatures during extended duty cycles. For rapid field installation, the unit features 1/4" quick connect terminals and molded terminal numbers with a circuit diagram integrated directly onto the top of the housing. This model is a direct plug-compatible replacement for Steveco 90-340 and Mars 90340, making it a versatile choice for service technicians. With a broad temperature rating of -20°F to 150°F and specific pilot duty ratings suitable for Powerpile applications, it delivers the high-amperage switching capacity required for demanding HVACR environments.
Key Benefits
- Universal 208/240V switching relay capacity for broad compatibility with commercial HVACR systems and industrial controllers.
- High-amperage Full Load Contact Ratings including 12 Amp at 120Vac and 6 Amp at 208/240Vac for reliable motor starting.
- Optimized thermal management via an untaped coil that prevents overheating in enclosed control panels.
- Streamlined HVAC relay wiring with molded terminal identifiers and a top-mounted schematic for reduced diagnostic time.
- Drop-in replacement for common industry standards, including Steveco 90-340 and Mars 90340 models.
Common Questions
What are the resistive load limits for this relay at 240V?The R4222D1021 is rated for a resistive contact rating of 20.8 Amp at 120/208/240/277Vac. This makes it suitable for electric heat applications and other non-inductive loads where high current capacity is necessary.
Can this relay be used in Millivolt or Powerpile systems?Yes, the normally open contacts are rated for Powerpile applications at 0.25 Amp between 0.25 and 12Vdc, providing flexibility for specific gas valve control circuits.
What is the Locked Rotor Amp (LRA) capacity for 240V applications?For 208/240/277Vac applications, the relay features a Locked Rotor Contact Rating of 35 Amp, ensuring the contacts can handle the initial inrush current of heavy induction motors.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $30.07
-65%$30.07
$10.52Resideo R4222D1021 Relay
The Resideo R4222D1021 Relay is a heavy-duty DPDT switching relay engineered for refrigeration, air conditioning, and industrial automation equipment. Designed with a 208/240Vac coil rating, this general-purpose relay provides dependable control for high-voltage loads including motors, compressors, and fan circuits. The laminated magnet construction increases operational efficiency, while the untaped coil design ensures cooler running temperatures during extended duty cycles. For rapid field installation, the unit features 1/4" quick connect terminals and molded terminal numbers with a circuit diagram integrated directly onto the top of the housing. This model is a direct plug-compatible replacement for Steveco 90-340 and Mars 90340, making it a versatile choice for service technicians. With a broad temperature rating of -20°F to 150°F and specific pilot duty ratings suitable for Powerpile applications, it delivers the high-amperage switching capacity required for demanding HVACR environments.
Key Benefits
- Universal 208/240V switching relay capacity for broad compatibility with commercial HVACR systems and industrial controllers.
- High-amperage Full Load Contact Ratings including 12 Amp at 120Vac and 6 Amp at 208/240Vac for reliable motor starting.
- Optimized thermal management via an untaped coil that prevents overheating in enclosed control panels.
- Streamlined HVAC relay wiring with molded terminal identifiers and a top-mounted schematic for reduced diagnostic time.
- Drop-in replacement for common industry standards, including Steveco 90-340 and Mars 90340 models.
Common Questions
What are the resistive load limits for this relay at 240V?The R4222D1021 is rated for a resistive contact rating of 20.8 Amp at 120/208/240/277Vac. This makes it suitable for electric heat applications and other non-inductive loads where high current capacity is necessary.
Can this relay be used in Millivolt or Powerpile systems?Yes, the normally open contacts are rated for Powerpile applications at 0.25 Amp between 0.25 and 12Vdc, providing flexibility for specific gas valve control circuits.
What is the Locked Rotor Amp (LRA) capacity for 240V applications?For 208/240/277Vac applications, the relay features a Locked Rotor Contact Rating of 35 Amp, ensuring the contacts can handle the initial inrush current of heavy induction motors.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Resideo R4222D1021 Relay is a heavy-duty DPDT switching relay engineered for refrigeration, air conditioning, and industrial automation equipment. Designed with a 208/240Vac coil rating, this general-purpose relay provides dependable control for high-voltage loads including motors, compressors, and fan circuits. The laminated magnet construction increases operational efficiency, while the untaped coil design ensures cooler running temperatures during extended duty cycles. For rapid field installation, the unit features 1/4" quick connect terminals and molded terminal numbers with a circuit diagram integrated directly onto the top of the housing. This model is a direct plug-compatible replacement for Steveco 90-340 and Mars 90340, making it a versatile choice for service technicians. With a broad temperature rating of -20°F to 150°F and specific pilot duty ratings suitable for Powerpile applications, it delivers the high-amperage switching capacity required for demanding HVACR environments.
Key Benefits
- Universal 208/240V switching relay capacity for broad compatibility with commercial HVACR systems and industrial controllers.
- High-amperage Full Load Contact Ratings including 12 Amp at 120Vac and 6 Amp at 208/240Vac for reliable motor starting.
- Optimized thermal management via an untaped coil that prevents overheating in enclosed control panels.
- Streamlined HVAC relay wiring with molded terminal identifiers and a top-mounted schematic for reduced diagnostic time.
- Drop-in replacement for common industry standards, including Steveco 90-340 and Mars 90340 models.
Common Questions
What are the resistive load limits for this relay at 240V?The R4222D1021 is rated for a resistive contact rating of 20.8 Amp at 120/208/240/277Vac. This makes it suitable for electric heat applications and other non-inductive loads where high current capacity is necessary.
Can this relay be used in Millivolt or Powerpile systems?Yes, the normally open contacts are rated for Powerpile applications at 0.25 Amp between 0.25 and 12Vdc, providing flexibility for specific gas valve control circuits.
What is the Locked Rotor Amp (LRA) capacity for 240V applications?For 208/240/277Vac applications, the relay features a Locked Rotor Contact Rating of 35 Amp, ensuring the contacts can handle the initial inrush current of heavy induction motors.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












