Overview
The IDEC RH2B-UL is a general purpose midget relay designed for reliable industrial control applications. This 24V DPDT relay offers 10A switching capacity with plug-in convenience and an integrated indicator light for operational visibility. The blade terminal design enables quick socket mounting on DIN rail, surface, or panel-mounted systems.
Key Features
- DPDT Configuration: Double Pole Double Throw contacts for flexible switching logic
- 10A Switching Capacity: Handles up to 10 amps on all contacts
- Indicator Light: Built-in LED for visual coil energization confirmation
- Compact Midget Design: Space-saving form factor (0.819″ L × 1.07″ W × 1.39″ H)
- Socket Mounting: Blade terminals for plug-in installation to optional socket bases
- Industrial Certifications: UL recognized and CSA certified for North American deployment
Technical Specifications
- Coil Voltage: 24V (DC or AC version available)
- Contact Configuration: DPDT (Double Pole Double Throw)
- Contact Rating: 10A maximum
- Switching Voltage: Up to 120VAC, 30VDC
- Power Consumption (DPDT): 1.4 VA (AC 50Hz), 1.2 VA (AC 60Hz); 0.9W (DC)
- Operate/Release Time: 20 milliseconds maximum
- Operating Temperature Range: -30°C to +70°C
- Contact Resistance: 50 MΩ maximum (initial)
- Insulation Resistance: 100 MΩ minimum (at 500 VDC)
- Coil Resistance: 650 Ohms (24V DC model)
- Dimensions: 0.819″ L × 1.07″ W × 1.39″ H
- Termination: Plug-in blade terminals (0.187″ quick connect)
- Mounting Options: DIN rail, surface, or panel mount (with optional socket bases)
- Certifications: UL 508 recognized; CSA C22.2 No. 14 certified; CE marked
Typical Applications
The RH2B-UL is widely used in:
- Industrial machine control and automation systems
- Control panel switching logic and sequencing
- Energy management and power distribution circuits
- HVAC and facility control systems
- Process equipment interlocking and safety circuits
Compatibility & Replacements
Compatible With
- IDEC SH2B-05 standard DIN rail socket base
- IDEC SH2B-02 surface mount socket base
- IDEC SH2B-51 panel mount socket base
- Standard 0.187″ (4.7mm) blade terminal sockets
- DIN rail mounting systems (35mm/TS35 rails)
- 24V AC and 24V DC control circuits
Replaces / Drop-In Replacement For
The RH2B-UL with indicator light is a direct replacement for earlier IDEC RH2B-U (without indicator) units where visual coil status is required. Verify socket compatibility with your existing installation before substitution.
Works With
- IDEC relay socket bases (SH2B series)
- Standard 24V AC/DC control supplies
- Industrial PLCs and logic controllers requiring hardwired relay outputs
- Standard relay terminal blocks and DIN rail mounting hardware
