ESP M2/M4 Series

Very low let-through voltage (enhanced protection to
IEC/BS EN 62305) between all sets of conductors (phase to
neutral, phase to earth and neutral to earth - Full Mode
protection)
Full Mode design capable of handling high energy partial
lightning currents as well as allowing continual operation
of protected equipment
Innovative multiple thermal disconnect technology,
for safe disconnection from faulty or abnormal supplies
(without compromising protective performance)
Three way visual indication of protection status
Advanced pre-failure warning so you need never be
unprotected
Remote indication facility allows pre-failure warning to be
linked to a building management system, buzzer or light
Changeover active volt-free contact enables the protector
to be used to warn of phase loss (i.e. power failure,
blown fuses, etc.)
Unique flashing warning of potentially fatal neutral to
earth supply faults (caused by incorrect earthing, wiring
errors or unbalanced conditions)
Robust steel housing
Protector base provides ultra low inductance earth bond
to metal panels
Convenient holes for flat mounting

Application
Use ESP M2 versions on main distribution board for
buildings with a Class III or IV structural LPS fitted or
exposed 3 phase power lines where no LPS is fitted. Use
ESP M4 versions on main distribution board for buildings
with a Class I or II LPS fitted.

Installation
Install in parallel, within the power distribution board, either on
the load side of the incoming isolator, or on the closest
outgoing way to the incoming supply. Connect, with very short
connecting leads, to phase(s), neutral and earth. Phase/live
connecting leads should be fused with HRC fuses, a switchfuse,
MCCB or type C MCB. For TT installations, contact Furse.