Phoenix Contact PLC Interface Relay Module

Description

The PLC-BSC-24DC/21-21 is a high-quality PLC interface relay from Phoenix Contact, designed for seamless integration into automation and control systems. This module consists of a basic terminal block with screw connections and a plug-in miniature relay, all mounted on a convenient DIN rail housing. It is ideal for signal amplification, electrical isolation, and interfacing between PLC outputs and field devices. With its robust design and reliable performance, it ensures the integrity of your control signals. Order now from PLC2Day for expert support and fast delivery.

Specifications

• Manufacturer: Phoenix Contact
• Type: PLC-BSC-24DC/21-21
• Order Number: 2967015
• Input Voltage: 24V DC
• Output Contacts: 2 PDT (changeover contacts)
• Maximum Switching Voltage: 250V AC / DC
• Maximum Continuous Current: 6 A
• Connection Method: Screw connection
• Mounting: DIN rail NS 35/7,5

Label Info

• Socket: PLC-BSC-24DC/21-21 (2967015)
• Relay: REL-MR- 24DC/21-21 (2961192)

Application

This relay module is widely used in industrial automation, process control, building automation, and machine building for tasks such as controlling actuators, switching loads, and isolating sensitive controller outputs from electrical noise and high voltages.

Country of Origin

Made in Germany.

CO2 Impact

By choosing this pre-owned component, you are actively participating in the circular economy and have helped avoid approximately 2.2 kg of CO2 emissions associated with the production of a new unit. This is comparable to the emissions from a 11 km car journey.

Availability

Available from stock for immediate dispatch.

FAQ

The 'BSC' in PLC-BSC-24DC/21-21 stands for a screw connection terminal block base. The 'RSC' series uses spring-cage connections for faster, vibration-resistant wiring. Functionally, they are similar, but the connection technology is the key difference.

Yes, this is a key feature of the PLC-INTERFACE series. The miniature relay REL-MR- 24DC/21-21 (2961192) can be easily unplugged from the PLC-BSC... base and replaced without disturbing the field wiring, which saves significant time during maintenance.

2 PDT (Pole Double Throw), also known as 2 C/O (Changeover), means the relay has two independent sets of contacts. Each set has a common terminal (COM), a normally open terminal (NO), and a normally closed terminal (NC), allowing you to control two separate circuits or switch a single circuit between two different paths.

Last Update: Friday, March 13, 2026

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