Description
DEIF
UNI-LINE
TYPE: RMC-111D
SHORT CIRCUIT RELAY
SUPPLY: 440V AC / T1: 5S
247110.20
MEAS CURRENT: 1A MODULE: 1A
SCALE: 1
600V CAT III.
The DEIF RMC-111D is a Uni-Line short circuit relay designed to detect and respond to overcurrent and short circuit conditions within marine electrical distribution and control systems. Operating on a 440V AC supply with a measured current rating of 1A and a response time of 5 seconds, this relay forms a critical layer of protection within shipboard power management and automation panels. As part of DEIF’s established Uni-Line relay series, it plays an essential role in maintaining electrical safety and system continuity across marine control infrastructure.
Key Features
✓ Short circuit detection relay with 440V AC supply voltage, 1A measured current, 1A module rating, and a T1 response time of 5 seconds — as specified on the original nameplate.
✓ Rated to 600V CAT III, indicating suitability for distribution-level electrical measurement environments typical of marine switchboard and control panel installations.
✓ Part of the DEIF Uni-Line modular relay series, designed for integration within DEIF power management and generator control systems — compatibility with specific panels subject to confirmation.
✓ Compact relay module format suitable for panel-mounted installation in switchboards, engine control rooms, or automation cabinets; exact mounting dimensions subject to confirmation from technical drawings.
✓ Replacement and retrofit considerations should include verification of module slot compatibility, current transformer ratio, and system firmware version to ensure correct operation within the existing control architecture.
Marine Applications
✓ Shipboard main switchboard and emergency switchboard protection systems where short circuit detection is required for generator or feeder circuits.
✓ Engine control room automation panels on cargo vessels, tankers, bulk carriers, and offshore support vessels utilising DEIF control and protection equipment.
✓ Power management systems requiring relay-based overcurrent protection to safeguard critical electrical distribution networks from fault conditions.
✓ Offshore platforms and drilling vessels where electrical protection relays are integrated into centralised control and monitoring systems for continuous operational safety.
✓ Passenger vessels and RoRo ferries operating under stringent electrical safety requirements where reliable short circuit protection is essential for class compliance and crew safety.
Why Marine Engineers Choose
Marine engineers specify the DEIF RMC-111D for its place within the proven Uni-Line relay platform, its clearly defined electrical ratings, and the confidence that comes from sourcing a nameplate-matched replacement for a known system — minimising downtime and reducing the risk of incompatibility during critical protection circuit maintenance.
Ideal For
Cargo vessels, bulk carriers, tankers, offshore support vessels, drilling units, passenger ferries, and any commercial or industrial marine application operating DEIF Uni-Line power management or generator control systems requiring short circuit relay replacement or upgrade.
Technical Support & Compliance
Technical assistance is available to support remote troubleshooting, onboard diagnostics, commissioning, and system integration for this relay within existing DEIF control architectures. Retrofit and replacement suitability is subject to confirmation based on the specific panel configuration and system version in service. To confirm compatibility, buyers are encouraged to share nameplate photographs, the full part number (247110.20), relevant wiring diagrams or system drawings, the DEIF panel or controller model and software version, and where applicable, vessel name and IMO number. All compatibility assessments are subject to confirmation upon review of the provided documentation.
