601 / 759
Technical Hotline
+44 (0)1268 563720
CIRCUIT PROTECTION
601
Standards and approvals
The Sentry Bell Transformer is designed to
comply fully with the requirements of
EN 60558-2-8.
TECHNICAL SPECIFICATION
ELECTRICAL
PRIMARY VOLTAGE
220V/240V a.c. 50Hz
SECONDARY VOLTAGE
8V a.c.
RATED OUTPUT CURRENT
1A
PHYSICAL
WIDTH
2 modules (36mm)
TERMINAL CAPACITY
1 x 2.5mm
2
AMBIENT OPERATING TEMP
–5°C to +40°C
IP RATING
Front face IP4X
MAX. INSTALLATION ALTITUDE
2000 metres
Sentry Technical
Description
The Bell Transformer is of the safety isolating, fail safe type. The construction is all
insulated, Class II.
It may be mounted within a Sentry Consumer Unit within 2 or 4 module enclosures
alongside MCBs, RCDs and RCBOs or surface mounted.
Installation
The Sentry Bell Transformer should always be connected in series with an MCB or
other type of protective device of rating not exceeding 6A.
When installed in a 230V environment, i.e. inside a consumer unit, the cables used
to connect the bell or chime to the transformer must have a 230V rated voltage. If
bell wire is used, suitable sleeving must be provided to increase its insulation rating
to 230V.
Dimensions (mm)
Bell Transformer