3RH2140-1BB40_SIEMENS_PRODUCT_吉林易择科技技术发展有限公司

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

400-887-3214

DESCRIBE

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

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