PHOENIX CONTACT PLC-RSC-12DC/21 2966171

Phoenix Contact PLC Interface Relay 12V DC PLC-RSC-12DC/21

Description

The PLC-RSC-12DC/21 is a complete PLC relay module from Phoenix Contact, designed for universal use in automation applications. This pre-assembled unit combines a relay base with screw connection and a pluggable miniature relay with a power contact. It is ideal for isolating and amplifying signals between a PLC and peripheral devices. Its slim design saves valuable space on the DIN rail, and the integrated LED provides a clear visual indication of the switching state.

Specifications

• Manufacturer: Phoenix Contact
• Model: PLC-RSC-12DC/21
• Order Number: 2966171
• Input Voltage: 12V DC
• Contact Type: 1 changeover contact (SPDT)
• Max. Switching Voltage: 250V AC/DC
• Limiting Continuous Current: 6 A
• Connection Method: Screw terminals
• Mounting: DIN rail NS 35/7,5

Label Info

• Socket: PLC-BSC-12DC/21 (Ord.-No. 2966896)
• Relay: Part of assembly, compatible with REL-MR- 12DC/21 (No. 2961150)

Application

This relay module is commonly used in industrial control cabinets for signal conditioning, electrical isolation, and power amplification for PLC inputs and outputs. It is suitable for switching small to medium loads like contactors, solenoid valves, and indicator lamps.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this reused component, you are helping to avoid the production of a new one, which saves approximately 1.0 kg of CO2. This is equivalent to the emissions from charging a smartphone 120 times.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question? Is the miniature relay replaceable in this module?

Answer

Yes, the PLC-RSC-12DC/21 consists of a base (PLC-BSC…) and a pluggable miniature relay (REL-MR-…). You can easily pull out the old relay and plug in a new one with the same specifications without disconnecting the wiring. Question? What is the purpose of the integrated LED?

Answer

The yellow LED on the module indicates the status of the relay coil. When the coil is energized (i.e., a 12V DC signal is applied to A1+/A2-), the LED will light up, confirming that the relay is activated. Question? What type of screwdriver is recommended for the screw terminals?

Answer

Phoenix Contact recommends using a slotted screwdriver with a 0.5 x 3.0 mm blade for the M3 screw terminals on this relay base to ensure a secure and damage-free connection.

Last Update: Friday, March 13, 2026

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