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  • New item   PLC-INTERFACE relay base | 24 V DC | LED | 6.2 mm | DIN 35 mm | Phoenix Contact PLC-BSC- 24DC/21 (2966016)

    PLC-INTERFACE relay base | 24 V DC | LED | 6.2 mm | DIN 35 mm | Phoenix Contact PLC-BSC- 24DC/21 (2966016)

    Code: PLC-BSC-24DC/21
    Inquire about this item
    Price 7.29 € VAT incl.
    ( 6.03 € VAT excl. )

    Phoenix Contact PLC-BSC- 24DC/21 (2966016) – 6.2 mm PLC-INTERFACE base with 24 V DC input, LED and protective circuit. Takes the REL-MR- 24DC/21 relay, sold separately.

  • Product description

    PLC-INTERFACE relay base | 24 V DC | LED | 6.2 mm | DIN 35 mm | Phoenix Contact PLC-BSC- 24DC/21 (2966016)

    Phoenix Contact PLC-BSC- 24DC/21 (2966016) is a socket for Phoenix Contact REL-MR- 24DC/21 relays. The relay plugs into the socket and the wires connect to the socket screw terminals, so the relay can be replaced without disturbing the wiring.

    Key point:
    A plug-in relay cannot be connected without a socket. A socket with screw terminals lets you mount the relay on a DIN rail and replace a faulty relay in seconds without disconnecting wires.
    Control voltage
    24 V DC
    Width
    6.2 mm
    Indication
    LED
    Protective circuit
    freewheeling diode

    Operating principle

    The socket snaps onto a 35 mm DIN rail. Coil (A1–A2) and contact wires connect to the screw terminals according to the diagram marked on the socket.

    The relay is plugged in and secured with the clip so it does not fall out due to vibration.

    When needed, the relay can be pulled out and replaced without disconnecting a single wire.

    Why choose Phoenix Contact PLC-BSC- 24DC/21 (2966016)?
    Phoenix Contact PLC-BSC- 24DC/21 – a 6.2 mm wide PLC-INTERFACE base with integrated 24 V DC input circuit: LED, freewheeling diode and reverse polarity protection. Takes the REL-MR- 24DC/21 relay.

    Technical specifications

    Product type PLC-INTERFACE relay base (without relay)
    Manufacturer / code Phoenix Contact 2966016
    Series PLC-INTERFACE
    Compatible relays REL-MR- 24DC/21 (2961105) – not included
    Control voltage 24 V DC
    Current consumption typ. 9 mA (with REL-MR relay)
    Protective circuit freewheeling diode; reverse polarity protection
    Contacts 1CO (11/12/14)
    Rated current 6 A (with REL-MR relay)
    Max. switching voltage 250 V AC/DC (with REL-MR relay)
    Terminals screw (M3)
    Wire cross-section 0.14–2.5 mm²
    Tightening torque 0.6–0.8 Nm
    Dimensions 6.2 × 80 × 94 mm
    Operating temperature −40…+60 °C
    Protection class IP20
    Mounting 35 mm DIN rail
    Indication LED

    Main functions

    • Screw terminals – reliable wire connection in the panel.
    • DIN rail – mounting next to other modular devices.
    • Fast relay replacement – wires stay connected.
    • Marked terminals – clear coil and contact numbering.
    • Retaining clip – the relay does not fall out due to vibration.

    Where is it used?

    • Automation and control panels
    • PLC input/output interfaces
    • Industrial machinery control cabinets
    • Building automation panels
    • HVAC control panels
    • Repair and replacement of faulty relays

    Use by need

    Panel builder.
    Neat relay mounting on DIN rail with clear terminal numbering.
    Maintenance technician.
    Replace the relay without disconnecting wires – shorter downtime.
    Automation integrator.
    A standard socket that fits the whole relay series.

    Practical application

    If an interface relay fails in the panel, it is simply pulled out of the socket and a new one plugged in – the wires stay on the socket terminals, the circuit does not change and downtime is a few minutes.

    Pros

    • DIN rail mounting
    • Relay replacement without disconnecting wires
    • Clearly marked terminals
    • Only 6.2 mm wide
    • LED and protective circuit already integrated

    Cons / limitations

    • Relay not included – order REL-MR- 24DC/21 (2961105)
    • 24 V DC control only
    • Fits only the specified relay series
    • Socket current is also limited by the relay ratings – the lower value applies

    Safety and installation notes

    • Install and replace relays only with the supply disconnected.
    • Tighten wires to the recommended torque; do not exceed the terminal cross-section.
    • Use only compatible relays and retaining clips.
    • Protect the socket circuit with a circuit breaker or fuse.

    Quick selection guide

    24 V DC
    6.2 mm
    LED
    REL-MR- 24DC/21
    Suitable when you need:
    • to mount a plug-in relay on DIN rail
    • to replace relays without disconnecting wires
    • to assemble an automation panel neatly
    Check before use:
    • that the relay series fits this socket
    • wire cross-section and terminal type
    • space in the panel (width, height under the cover)
    Important reminder: a socket is not a protective device – the circuit must be protected by a circuit breaker or fuse.

    FAQ

    Which relays fit?
    This socket is designed for Phoenix Contact REL-MR- 24DC/21 relays.
    Is the relay included?
    No, the relay is sold separately.
    How is it mounted?
    It snaps onto a 35 mm DIN rail.
    Can the relay be replaced without disconnecting wires?
    Yes, that is the main advantage of a socket.
    Does the socket protect the circuit?
    No, the circuit must be protected by a circuit breaker or fuse.
    Do you help with selection?
    Yes, send us the relay code – we will select a suitable socket and accessories.

    PLC-INTERFACE relay base | 24 V DC | LED | 6.2 mm | DIN 35 mm | Phoenix Contact PLC-BSC- 24DC/21 (2966016)

    Phoenix Contact PLC-BSC- 24DC/21 (2966016) – socket for Phoenix Contact REL-MR- 24DC/21 relays, DIN rail mounting, with screw terminals for fast relay replacement in automation panels.

    Published: 2026-11-05 · Data verified against the manufacturer datasheet: 2026-11-05

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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