
IDEC RH2B-ULCAC24V Relay
The IDEC RH2B-ULCAC24V Relay is a heavy-duty, 2-pole DPDT power relay engineered for reliable switching in HVACR and industrial control systems. As a staple in midget-sized "ice cube" relays, this unit offers a robust 10 Amp contact rating within a compact footprint, making it ideal for high-density control panels and motor-load applications. This specific model operates on a 24VAC coil (153 Ohm resistance) and features integrated manual check buttons and LED indicators for rapid onsite troubleshooting and mechanical testing without the need for a powered control circuit.
Built with silver cadmium oxide contacts, the RH2B-ULCAC24V ensures a long mechanical lifespan and stable electrical performance under inductive loads. It utilizes high-conductivity blade terminals (0.187" quick-connect) compatible with SH2B series sockets for secure, vibration-resistant DIN-rail or panel mounting. With a fast 20ms operate/release time and international certifications (UL, CSA, CE), this general-purpose power relay provides the precision and durability required for professional industrial automation and building management environments.
Key Benefits- 10A Switching Capacity: Handles heavy resistive and inductive loads across DPDT (2 Form C) configurations.
- Integrated Diagnostics: The built-in LED indicator and momentary check button allow for instant status verification and circuit dry-runs.
- Compact Midget Design: Saves critical rail space in crowded HVACR control panels without sacrificing switching power.
- Flexible Mounting: Standard blade terminals provide a plug-and-play fit for common SH2B sockets.
- Industrial Durability: Silver-based contacts and a wide operating temperature range (-30°C to +70°C) ensure reliable performance in mechanical rooms.
What is the difference between the RH2B and RY2S series?
The RH2B series is a compact power relay designed for higher current loads up to 10A, whereas the RY series is typically a miniature relay for lighter logic-level switching (often 3A to 5A).
Can I use this relay for both AC and DC switching on the contact side?
Yes. While the coil is 24VAC, the DPDT contacts are rated to switch up to 240VAC or 30VDC, making it versatile for mixed-voltage control loops.
Is a socket required for installation?
This is a plug-in relay with blade terminals. For standard HVACR service, it is typically paired with an SH2B-05 or SH2B-05C DIN rail mount socket, though it can also be used with solder or wire-wrap sockets.
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.
IDEC RH2B-ULCAC24V Relay
The IDEC RH2B-ULCAC24V Relay is a heavy-duty, 2-pole DPDT power relay engineered for reliable switching in HVACR and industrial control systems. As a staple in midget-sized "ice cube" relays, this unit offers a robust 10 Amp contact rating within a compact footprint, making it ideal for high-density control panels and motor-load applications. This specific model operates on a 24VAC coil (153 Ohm resistance) and features integrated manual check buttons and LED indicators for rapid onsite troubleshooting and mechanical testing without the need for a powered control circuit.
Built with silver cadmium oxide contacts, the RH2B-ULCAC24V ensures a long mechanical lifespan and stable electrical performance under inductive loads. It utilizes high-conductivity blade terminals (0.187" quick-connect) compatible with SH2B series sockets for secure, vibration-resistant DIN-rail or panel mounting. With a fast 20ms operate/release time and international certifications (UL, CSA, CE), this general-purpose power relay provides the precision and durability required for professional industrial automation and building management environments.
Key Benefits- 10A Switching Capacity: Handles heavy resistive and inductive loads across DPDT (2 Form C) configurations.
- Integrated Diagnostics: The built-in LED indicator and momentary check button allow for instant status verification and circuit dry-runs.
- Compact Midget Design: Saves critical rail space in crowded HVACR control panels without sacrificing switching power.
- Flexible Mounting: Standard blade terminals provide a plug-and-play fit for common SH2B sockets.
- Industrial Durability: Silver-based contacts and a wide operating temperature range (-30°C to +70°C) ensure reliable performance in mechanical rooms.
What is the difference between the RH2B and RY2S series?
The RH2B series is a compact power relay designed for higher current loads up to 10A, whereas the RY series is typically a miniature relay for lighter logic-level switching (often 3A to 5A).
Can I use this relay for both AC and DC switching on the contact side?
Yes. While the coil is 24VAC, the DPDT contacts are rated to switch up to 240VAC or 30VDC, making it versatile for mixed-voltage control loops.
Is a socket required for installation?
This is a plug-in relay with blade terminals. For standard HVACR service, it is typically paired with an SH2B-05 or SH2B-05C DIN rail mount socket, though it can also be used with solder or wire-wrap sockets.
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 IDEC RH2B-ULCAC24V Relay is a heavy-duty, 2-pole DPDT power relay engineered for reliable switching in HVACR and industrial control systems. As a staple in midget-sized "ice cube" relays, this unit offers a robust 10 Amp contact rating within a compact footprint, making it ideal for high-density control panels and motor-load applications. This specific model operates on a 24VAC coil (153 Ohm resistance) and features integrated manual check buttons and LED indicators for rapid onsite troubleshooting and mechanical testing without the need for a powered control circuit.
Built with silver cadmium oxide contacts, the RH2B-ULCAC24V ensures a long mechanical lifespan and stable electrical performance under inductive loads. It utilizes high-conductivity blade terminals (0.187" quick-connect) compatible with SH2B series sockets for secure, vibration-resistant DIN-rail or panel mounting. With a fast 20ms operate/release time and international certifications (UL, CSA, CE), this general-purpose power relay provides the precision and durability required for professional industrial automation and building management environments.
Key Benefits- 10A Switching Capacity: Handles heavy resistive and inductive loads across DPDT (2 Form C) configurations.
- Integrated Diagnostics: The built-in LED indicator and momentary check button allow for instant status verification and circuit dry-runs.
- Compact Midget Design: Saves critical rail space in crowded HVACR control panels without sacrificing switching power.
- Flexible Mounting: Standard blade terminals provide a plug-and-play fit for common SH2B sockets.
- Industrial Durability: Silver-based contacts and a wide operating temperature range (-30°C to +70°C) ensure reliable performance in mechanical rooms.
What is the difference between the RH2B and RY2S series?
The RH2B series is a compact power relay designed for higher current loads up to 10A, whereas the RY series is typically a miniature relay for lighter logic-level switching (often 3A to 5A).
Can I use this relay for both AC and DC switching on the contact side?
Yes. While the coil is 24VAC, the DPDT contacts are rated to switch up to 240VAC or 30VDC, making it versatile for mixed-voltage control loops.
Is a socket required for installation?
This is a plug-in relay with blade terminals. For standard HVACR service, it is typically paired with an SH2B-05 or SH2B-05C DIN rail mount socket, though it can also be used with solder or wire-wrap sockets.
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.











