Description
EATON ELECTRIC LTD.
CROUSE-HINDS SERIES
MTL7787P+
SHUNT-DIODE SAFETY BARRIER
OUTPUT CHANNEL: UO: 28V IO: 119MA UM: 250V
UL-BR 19.0112 (-20°C ≤ Ta≤ +60°C)
MTL DRAWING NO.: SCI-991
MADE IN INDIA
The Eaton MTL7787P+ is a shunt-diode safety barrier from the Crouse-Hinds series, used within marine control systems where signals pass between safe-area equipment and devices in hazardous locations. Its output channel is rated Uo 28 V and Io 119 mA, with a maximum safe-area voltage Um of 250 V, limiting the energy that can reach field wiring. The barrier forms part of the intrinsically safe interface on control and monitoring circuits. It is marked UL-BR 19.0112 for ambient temperatures from -20°C to +60°C. This unit is supplied in New Open Box condition.
Key Features
✓ Output channel rated Uo 28 V and Io 119 mA
✓ Maximum safe-area voltage Um 250 V
✓ UL-BR 19.0112 marking
✓ Ambient temperature range -20°C to +60°C
✓ Crouse-Hinds series, MTL drawing no. SCI-991
Marine Applications
✓ Intrinsically safe interface between control system I/O and hazardous-area field devices
✓ Instrument loops serving cargo and fuel handling areas
✓ Monitoring circuits for sensors located in pump rooms
✓ Barrier racks within engine control and alarm cabinets
Technical Support
Prota Marine provides technical support, repair and onboard installation for the shunt-diode safety barrier and the wider marine control system. Our engineers assist with fault diagnosis on barrier circuits and provide commissioning support once the unit is in place.
