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Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email:
enquiry@furse.com• Web:
www.furse.comESP M2/M4 Series
TSC-0912 - 09.10.12
Live connecting leads should be
fused accordingly
Parallel connection to three phase star
(4 wire and earth) supplies
(fuses not shown for clarity)
DIRTY
CLEAN
From
supply
To
load
For main distribution boards with multiple metallic services (gas, water, telecom/data lines)
entering and for sub-distribution boards, the ESP M1 Series are more suited. If your supply is
fused at 16 Amps, or less, the in-line protection (ESP 240 or 120-5A (or -16A) and ready-boxed
derivatives) may be suitable. If you need to mount the display panel separately from the
main protector unit, use the ESP XXX M2R or ESP XXX M4R.
Very low let-through voltage (enhanced protection to 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
Features and benefits
Combined Type 1, 2 and 3 tested protector (to BS EN 61643)
for use on the main distribution board directly feeding
electronic equipment such as computers, communication and
control equipment, particularly where a structural Lightning
Protection System (LPS) is employed. For use at boundaries
up to LPZ
0
A
to protect against flashover (typically the main
distribution board location) through to LPZ 3 to protect sensitive
electronic equipment.
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.
Installation
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.
Application
Weatherproof enclosures
WBX M2
For use with the ESP XXX M2
WBX M4
For use with the ESP XXX M4
Accessories
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.