
TECHNICAL DATA SHEET
Masterseal
Sentrysocket
1:2
PRODUCT RANGE
RCD protected switchsocket
outlets
30mA Active Control
Single socket 56301 GRY
Single socket 56301 WHI
Double socket 56231 GRY
30mA Passive Control
Double socket 56233 GRY
Compliance with EC Directives,
Standards and approvals
All Sentrysockets comply with the following
EC Directives and are CE marked:
Low Voltage Directive (73/23/EEC)
Electromagnetic Compatibility Directive (89/336/EEC)
Sentrysocket RCD Single Sockets also comply with
the requirements of the following standards:
BS 7288: 1990 (1993)
BS 2011 Part 2.1 Db (Damp Heat - cyclic)
BS 2011 Part 2.1 Ka (Salt mist)
BS EN 50082-1
Sentrysocket RCD Double Sockets comply with
BS 7288: 1990 (1993) and BS EN 61543: 1996 for EMC
Masterseal™ Sentrysocket
Description
Sentrysocket provides a high level of
protection against electrocution and gives
further protection when used with appliances
vulnerable to insulation damage, particularly
when they are in damp environments or
outdoors.
Sentrysocket, incorporating an RCD, is part of
a complete range of fixed and portable wiring
accessories and circuit protection devices
suitable for use in domestic, commercial and
industrial applications.
Active control circuits
Incorporate a ‘Re-set’ mechanism and are
mains failure sensitive, ie they will function
under all the normal conditions expected of
an RCD, but will also trip in the event of a
Features
I Suitable for most residential,
commercial and light industrial
applications.
I Active and passive control circuit
applications
I Comply fully with current Wiring
Regulations
I Double pole switching
®
power cut or a sudden, dramatic reduction in
mains voltage. This makes them ideal for use
where it would be hazardous for equipment
to suddenly energise after return of mains
power, such as use with rotating machinery
and heat developing apparatus.
Passive control circuit
Incorporates a ‘Stay-set’ mechanism and is
mains failure proof, ie it will function under all
the normal conditions expected of an RCD
and will not trip in the event of a power cut.
This makes it suitable for use with freezers or
in inaccessible or unmanned locations.
I Flexible and versatile in use
I Ideal for use with equipment subject to
wet weather or high humidity
I Part of a complete range of MK circuit
protection devices
I They are a.c. and pulsating d.c.
sensitive for residual current
I Enclosure IP56
©2002 MK Electric Limited The Arnold Centre, Paycocke Road, Basildon, Essex SS14 3EA, United Kingdom Tel: +44 (0)1268 563720 Fax: +44 (0)1268 563064 email: more@mkelectric.co.uk www.mkelectric.co.uk Edition 06-02

TECHNICAL DATA SHEET
Conduit Entry Centre Lines
72.5
67
36.25
157.5
Masterseal
Sentrysocket
2:2
Dimensions (mm)
Single and double sockets are identical in size and shape.
The following dimensions apply
TECHNICAL SPECIFICATION
Electrical
Rated Voltage:
240V a.c.
Current rating:
13A resistive
Rated tripping current
30mA and 10mA versions
Terminal capacity:
2
3 x 4mm
Physical
Ambient operating temperature:
–5°C to +40°C
IP rating:
IP4X
Max. installation altitude:
2000 metres
175
115
Fixing Dimensions
Masterseal products are suitable for surface mounting only.
80
©2002 MK Electric Limited The Arnold Centre, Paycocke Road, Basildon, Essex SS14 3EA, United Kingdom Tel: +44 (0)1268 563720 Fax: +44 (0)1268 563064 email: more@mkelectric.co.uk www.mkelectric.co.uk Edition 06-02