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3RH2131-1BB40

The 3RH2131-1BB40 is a compact contactor relay from Siemens' SIRIUS 3RH2 series, designed for control and switching tasks in industrial automation, motor control, and power distribution applications. It features a 1 NO + 1 NC contact configuration and is optimized for reliable operation in demanding environments.

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TEL：400-887-3214
Mail：jilineasyyi@outlook.com
Q Q：615739355
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Key Features & Technical Parameters
1. General Specifications
Type: Electromechanical Contactor Relay

Rated Operational Current (Ie):

AC-1 (Resistive Loads): 6 A @ 400V AC

AC-3 (Motor Loads): 3 A @ 400V AC

Rated Operational Voltage (Ue):

AC: 230V / 400V (50/60 Hz)

DC: 24V (control circuit)

Contact Configuration: 1 NO (Normally Open) + 1 NC (Normally Closed)

Mechanical Life: 10 million operations

Electrical Life:

AC-3: 300,000 operations

AC-1: 1 million operations

2. Coil & Control Data
Coil Voltage (Us): 24V DC (other voltages available in variant models)

Power Consumption:

DC Coil: ≈ 1.8 W

AC Coil (if applicable): ≈ 3.5 VA

Switching Time: ≈ 10–15 ms

3. Mechanical & Environmental Data
Mounting: DIN rail (35 mm) or screw mounting

Protection Class: IP20 (requires enclosure for dust/moisture protection)

Ambient Temperature Range: -25°C to +60°C

Housing Material: Flame-retardant thermoplastic (UL94 V0)

Typical Applications
✔ Motor Control – Start/stop of small motors (e.g., fans, pumps)
✔ Signal Switching – PLC interface, control circuits
✔ Lighting Control – Switching of lighting loads
✔ HVAC Systems – Control of compressors, dampers