SIEMENS 3RF2171-1AA45-1KP0 1-Phase Solid-State Relay 20A 230VAC

The 3RF2171-1AA45-1KP0 is a compact, DIN-rail solid-state relay (SSR) from the proven SIEMENS SIRIUS 3RF2 family. Designed for 1-phase resistive or slightly inductive loads, it switches 24–230 VAC currents up to 20 A with zero-crossing technology for low-noise operation and long electrical life. The 45 mm width, spring-loaded terminals and integrated heat sink make it ideal for panel builders upgrading from mechanical contactors in plastics, packaging or HVAC applications.

Key Specifications

• Order number: 3RF2171-1AA45-1KP0
• Device type: 1-phase solid-state relay, zero-crossing
• Load voltage: 24–230 VAC (45–65 Hz)
• Rated operational current: 20 A at 40 °C (AC-51)
• Control voltage: 24 VDC (19–30 VDC, 6 mA)
• Isolation: 4 kV (input-to-output)
• Switching time: <10 ms ON, <10 ms OFF
• Integrated varistor protection (250 V)
• Mounting: DIN rail TS 35, 45 mm module width
• Operating temperature: –25 °C … +60 °C (derating above 40 °C)
• Certifications: CE, UL, CSA, EAC, RCM, RoHS

Company Service:

1. Fast delivery (1-3 days will ship out for in-stock products)

2. Rich experience (More than 10 years of sales experience)

3. Large inventory ( Various brands and overseas warehouse)

4. Quality insurance ( Clear products condition with 1-year warranty)

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SIEMENS 3RF2171-1AA45-1KP0 1-Phase Solid-State Relay 20A 230VAC Images