IDEC Relays RH4B-ULAC24V Relay
The IDEC RH4B-ULAC24V is a heavy-duty, 4PDT relay designed for demanding industrial and HVACR control circuits. As a staple in the IDEC RH Series, this compact power relay delivers a robust 10A contact rating, making it a reliable choice for switching multiple loads simultaneously in tight control panels. Featuring silver cadmium oxide contacts (AgCdO), this unit is engineered to reduce voltage arcing and provide a mechanical life of up to 50 million operations. The 24Vac coil is optimized for standard 24-volt control systems, while the integrated LED indicator allows for rapid visual status checks during system diagnostics. With blade terminals (.187") compatible with standard DIN rail sockets like the SH4B-05, this socket mount relay ensures a secure connection and simplified replacement. Whether you are managing motor starters, solenoids, or complex interlocking logic, this midget-size relay provides the high switching capacity required for professional-grade automation.
Key Benefits for the Technician- Versatile 4PDT Contact Form: Enables simultaneous control of four independent circuits with a single 24Vac signal.
- High-Capacity 10Amp Rating: Provides superior performance for general-purpose power applications compared to standard miniature relays.
- Arc-Resistant Design: Silver cadmium oxide contacts minimize material transfer and pitting, extending the operational life of the electromechanical relay.
- Quick Troubleshooting: The built-in indicator light confirms coil energization at a glance, reducing downtime during service calls.
- Space-Saving Footprint: The compact midget size is ideal for high-density control panels where DIN rail real estate is limited.
How do I test the coil on an IDEC RH4B-ULAC24V?
Using a multimeter set to ohms, measure across the coil terminals. A healthy 24Vac coil for this model typically shows a nominal resistance of approximately 84.5 Ohms. If the reading is open or shows significantly higher resistance, the coil has failed.
What is the best socket for this RH Series relay?
For standard DIN rail mounting, a 14-pin socket such as the IDEC SH4B-05 is the recommended interface for 4-pole blade terminal configurations.
Can this relay be used for DC loads?
While the coil is rated for 24Vac, the 10A contacts are rated for both AC (up to 240V) and DC (30V) resistive loads. Always verify the specific inductive load derating if switching DC motors or solenoids.
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: $20.85
-65%$20.85
$7.30IDEC Relays RH4B-ULAC24V Relay
The IDEC RH4B-ULAC24V is a heavy-duty, 4PDT relay designed for demanding industrial and HVACR control circuits. As a staple in the IDEC RH Series, this compact power relay delivers a robust 10A contact rating, making it a reliable choice for switching multiple loads simultaneously in tight control panels. Featuring silver cadmium oxide contacts (AgCdO), this unit is engineered to reduce voltage arcing and provide a mechanical life of up to 50 million operations. The 24Vac coil is optimized for standard 24-volt control systems, while the integrated LED indicator allows for rapid visual status checks during system diagnostics. With blade terminals (.187") compatible with standard DIN rail sockets like the SH4B-05, this socket mount relay ensures a secure connection and simplified replacement. Whether you are managing motor starters, solenoids, or complex interlocking logic, this midget-size relay provides the high switching capacity required for professional-grade automation.
Key Benefits for the Technician- Versatile 4PDT Contact Form: Enables simultaneous control of four independent circuits with a single 24Vac signal.
- High-Capacity 10Amp Rating: Provides superior performance for general-purpose power applications compared to standard miniature relays.
- Arc-Resistant Design: Silver cadmium oxide contacts minimize material transfer and pitting, extending the operational life of the electromechanical relay.
- Quick Troubleshooting: The built-in indicator light confirms coil energization at a glance, reducing downtime during service calls.
- Space-Saving Footprint: The compact midget size is ideal for high-density control panels where DIN rail real estate is limited.
How do I test the coil on an IDEC RH4B-ULAC24V?
Using a multimeter set to ohms, measure across the coil terminals. A healthy 24Vac coil for this model typically shows a nominal resistance of approximately 84.5 Ohms. If the reading is open or shows significantly higher resistance, the coil has failed.
What is the best socket for this RH Series relay?
For standard DIN rail mounting, a 14-pin socket such as the IDEC SH4B-05 is the recommended interface for 4-pole blade terminal configurations.
Can this relay be used for DC loads?
While the coil is rated for 24Vac, the 10A contacts are rated for both AC (up to 240V) and DC (30V) resistive loads. Always verify the specific inductive load derating if switching DC motors or solenoids.
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
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Description
The IDEC RH4B-ULAC24V is a heavy-duty, 4PDT relay designed for demanding industrial and HVACR control circuits. As a staple in the IDEC RH Series, this compact power relay delivers a robust 10A contact rating, making it a reliable choice for switching multiple loads simultaneously in tight control panels. Featuring silver cadmium oxide contacts (AgCdO), this unit is engineered to reduce voltage arcing and provide a mechanical life of up to 50 million operations. The 24Vac coil is optimized for standard 24-volt control systems, while the integrated LED indicator allows for rapid visual status checks during system diagnostics. With blade terminals (.187") compatible with standard DIN rail sockets like the SH4B-05, this socket mount relay ensures a secure connection and simplified replacement. Whether you are managing motor starters, solenoids, or complex interlocking logic, this midget-size relay provides the high switching capacity required for professional-grade automation.
Key Benefits for the Technician- Versatile 4PDT Contact Form: Enables simultaneous control of four independent circuits with a single 24Vac signal.
- High-Capacity 10Amp Rating: Provides superior performance for general-purpose power applications compared to standard miniature relays.
- Arc-Resistant Design: Silver cadmium oxide contacts minimize material transfer and pitting, extending the operational life of the electromechanical relay.
- Quick Troubleshooting: The built-in indicator light confirms coil energization at a glance, reducing downtime during service calls.
- Space-Saving Footprint: The compact midget size is ideal for high-density control panels where DIN rail real estate is limited.
How do I test the coil on an IDEC RH4B-ULAC24V?
Using a multimeter set to ohms, measure across the coil terminals. A healthy 24Vac coil for this model typically shows a nominal resistance of approximately 84.5 Ohms. If the reading is open or shows significantly higher resistance, the coil has failed.
What is the best socket for this RH Series relay?
For standard DIN rail mounting, a 14-pin socket such as the IDEC SH4B-05 is the recommended interface for 4-pole blade terminal configurations.
Can this relay be used for DC loads?
While the coil is rated for 24Vac, the 10A contacts are rated for both AC (up to 240V) and DC (30V) resistive loads. Always verify the specific inductive load derating if switching DC motors or solenoids.
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.
