ABB 1SVR450081R0000 Control Relay

Description

ABB 1SVR450081R0000 Control Relay

The ABB 1SVR450081R0000 is an electronic interface relay from the CR-M (Miniature Interface Relay) range. Specifically, it refers to the CR-M024DC2 model, which is a pluggable miniature relay used for electrical isolation, amplification, and matching between sensitive control electronics (like a PLC) and high-power loads.

Product Detailed Description

The CR-M024DC2 is a miniature interface relay designed to be plugged into a compatible socket (such as the CR-M2SS). It features 2 change-over (SPDT) contacts and is operated by a 24 V DC control voltage. It includes a built-in test button for manual actuation and visual checking of the contact status.

Technical Parameters

Product Advantages

• Integrated Test Button: Allows for manual operation and testing of the circuit without needing to energize the control coil, which is invaluable during commissioning.
• Galvanic Isolation: Provides a high level of electrical separation between the control circuit (input) and the load circuit (output), protecting expensive PLCs from voltage spikes.
• Compact Design: The miniature size allows for high-density mounting in control cabinets, saving significant rail space.
• Cadmium-Free Contacts: Environmentally friendly construction using AgNi contacts, which also provide excellent wear resistance.
• Status Indication: Features a mechanical flag/indicator that shows the actual position of the contacts at a glance.

Important Considerations (Precautions)

• Socket Selection: This is a plug-in relay and does not include the base. You must order a compatible CR-M socket (e.g., 1SVR405651R1000) separately.
• Polarity: Since this model is DC-operated, ensure the correct polarity is observed if using optional LED modules in the socket.
• Inductive Loads: When switching inductive loads (like motor contactors or solenoids), it is highly recommended to use a plug-in function module (surge suppressor/diode) in the socket to prevent back-EMF from damaging the control electronics.
• Manual Button Safety: Ensure the manual test button is not accidentally depressed during normal operation, as this will override the logic controller.

Product Applications

The ABB CR-M024DC2 is a versatile component found in almost all automation systems:

• PLC Interfacing: Using low-power PLC outputs to switch higher-current AC or DC loads.
• Signal Multiplier: Using one control signal to switch two independent circuits via the 2 c/o contacts.
• Industrial Control Panels: General-purpose switching for fans, small motors, heating elements, and signal lamps.
• Isolation: Separating different voltage levels within a system (e.g., 24 V DC control switching a 230 V AC load).

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