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3RH2140-1BB40

The 3RH2140-1BB40 is a SIRIUS 3RH2 series contactor relay from Siemens, designed for switching and controlling electrical loads in industrial automation systems. It is commonly used in motor control, lighting, and power distribution applications

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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: Contactor Relay (Electromechanical)

Rated Operational Current (Ie): 9 A (AC-1) / 4 A (AC-3)

Rated Operational Voltage (Ue):

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

DC: 24V (for control circuit)

Switching Capacity:

AC-1 (Resistive Loads): 9 A @ 400V

AC-3 (Motor Loads): 4 A @ 400V

Number of Poles: 1 NO (Normally Open) + 1 NC (Normally Closed)

Mechanical Life: 10 million operations

Electrical Life: 300,000 operations (AC-3)

2. Coil & Control Characteristics
Coil Voltage (Us): 24V DC / 230V AC (varies by model)

Power Consumption: ≈ 2.5 W (DC) / ≈ 4 VA (AC)

Switching Time: ≈ 10–20 ms

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

Protection Class: IP20 (enclosure required for higher protection)

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

Housing Material: Self-extinguishing thermoplastic (UL94 V0)

Typical Applications
✔ Motor Control – Start/stop of small motors (e.g., pumps, fans)
✔ Lighting Control – Switching of lighting circuits
✔ Industrial Automation – Signal switching in PLC systems
✔ HVAC Systems – Control of compressors and blowers