Description
DEIF A/S
MTR-4P
MULTI-FUNCTIONAL PROTECTION RELAY
TYPE: MTR-4P415
ITEM: 1200510032
HW. VER.: B
1200510032A
4U 1…8A 50…500V 50, 60 HZ CI.0.5
4X RO, RS485
SERIAL INPUT: RS485 MODBUS
CURRENT: 5 A / VOLTAGE: 50…500 V
FREQUENCY: 45…65 HZ / CONNECTION 4U
CAT III 600V MAX.
CLASS 0.5
The DEIF MTR-4P415 is a multi-functional protection relay designed for advanced monitoring and protection of electrical systems aboard commercial and industrial vessels. As part of the Marine Control System category, this relay performs critical functions including overcurrent, overvoltage, undervoltage, and frequency protection across a wide operating range. Its role in shipboard power management makes it an essential component for maintaining generator and distribution system integrity, safeguarding equipment from electrical faults that could cause operational downtime or damage to critical machinery.
Key Features
✓ Multi-functional protection relay with Class 0.5 measurement accuracy, operating across a voltage range of 50–500V and a frequency range of 45–65 Hz, with CAT III 600V maximum rating.
✓ Serial communication via RS485 Modbus interface, enabling integration with vessel automation and monitoring networks for remote supervision and data logging.
✓ Equipped with 4x relay outputs (RO) and 4U connection configuration, with a rated current input of 5A — suitable for standard shipboard current transformer secondary circuits.
✓ Hardware Version B (HW. VER.: B) as identified by item number 1200510032; compatibility with specific control panels, switchboards, or DEIF system configurations should be confirmed against existing installation drawings and system documentation.
✓ Designed for installation in marine electrical panels and switchgear enclosures; mounting location, enclosure rating, and SOLAS relevance depend on the specific vessel system configuration and should be verified during commissioning.
Marine Applications
✓ Generator protection panels on merchant vessels, offshore support vessels, and platform supply vessels where precise voltage and frequency monitoring is required.
✓ Main switchboard and bus protection systems on ferries, ro-ro vessels, and bulk carriers requiring reliable multi-parameter electrical protection.
✓ Shore power interface panels and automatic transfer switching systems where CAT III voltage tolerance and Modbus connectivity are operationally beneficial.
✓ Integrated power management systems (PMS) on yachts, cruise vessels, and naval auxiliaries where RS485 network communication with central controllers is standard.
✓ Retrofit and upgrade applications on vessels transitioning to networked automation systems, replacing legacy single-function relays with a consolidated multi-functional unit.
Why Marine Engineers Choose
The DEIF MTR-4P415 is valued for combining wide-range electrical protection with Class 0.5 measurement precision and RS485 Modbus connectivity in a single compact relay. Its broad voltage and frequency operating envelope makes it adaptable across diverse vessel power system architectures, reducing the need for multiple discrete protection devices and simplifying panel layouts.
Ideal For
Merchant vessels, offshore support vessels, platform supply vessels, ferries, ro-ro ships, bulk carriers, cruise ships, and any commercial or industrial vessel requiring reliable multi-functional generator or distribution system protection within a Marine Control System framework.
Technical Support & Compliance
Technical support is available for remote troubleshooting, onboard commissioning, relay testing, retrofit integration, and system compatibility verification — subject to confirmation based on vessel-specific configuration. Repair and replacement services may be available depending on scope. To confirm suitability for your installation, buyers are encouraged to share nameplate photographs, the part number and hardware version, existing wiring diagrams or panel drawings, the system model and software version in use, and vessel name or IMO number where applicable. All compatibility assessments are subject to confirmation against supplied documentation.
