588 / 759
mkelectric.co.uk
CIRCUIT PROTECTION
588
Standards and approvals
All Sentry RCDs are designed to fully comply
with the requirements of BS EN 61 008:1995.
IEC 1008:1990
They all feature positive contact status indication
in accordance with 17th edition IEE Wiring
Regulations (537.2.2.2 and 537 .3 .2 .2).
TECHNICAL SPECIFICATION
ELECTRICAL
RATED MAKING AND BREAKING CAPACITY /M
16 - 40A = 500A
63 - 80A = 800A
Type AC
RATED SHORT-CIRCUIT CURRENT / INC
16A - 40A = 6,000A (100A Fuse)
Rated residual short-circuit current /IAm: 16 -
100A = 6,000A
RATED VOLTAGES
2 pole devices, 230V
OPERATING VOLTAGES
2 pole devices, 230V - 100V to 250V
TRIPPING TIME
1 x IAn ~300ms
5 x IAn ~40ms
PHYSICAL
AMBIENT OPERATING TEMPERATURE
–25°C to + 40°C
IP RATING
Front face after installation of enclosure IP40
TERMINAL CAPACITY
Solid stranded - 1 x 1.5 - 35mm
2
Flexible with ferrule
- 1 x 1 .5 - 35mm
2
TIGHTENING TORQUE
3Nm
MAX. INSTALLATION ALTITUDE
2000 metres
FEATURES
l
Meet BS EN and IEE Wiring Regulation
requirements
l
Extensive range to suit all
specifications
l
Protect against unwanted tripping
l
Positive contact status indication
l
Suitable for most residential,
commercial and light industrial
applications
l
Offer a high degree of protection
against electrocution in accidental
shock hazard situations
l
Two module, double pole units
available up to 80A
Sentry Technical
Residential 6kA Residual Current Devices (RCDs)
Description
The Sentry range of RCDs offer a comprehensive selection of devices designed to
meet most residential, commercial and light industrial requirements.
The range is two pole, a.c. fault current sensitive with a selection of current ratings
from 16 to 80A and is available in a variety of tripping sensitivities.
When in the OFF position a contact gap of 4mm is present, enabling Sentry RCDs
to be used as isolating switches where appropriate.
The operating dolly may be locked in either the ON or OFF position without affecting
the ability of the trip mechanism to operate, i.e. the RCD is ‘trip-free’. It is not
possible to hold the contacts closed when a fault condition exists.
All Sentry RCDs incorporate a filtering device to provide protection against transient
surges in the supply to the unit, thus reducing the occurrence of unwanted tripping.