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CIRCUIT PROTECTION
597
TECHNICAL SPECIFICATION
All Contactor List Nos. are designed to operate at either 20, 40 or 63 amps continuous current (AC1-AC7b) 50Hz and have a
mechanical life of 1,000,000 operations.
The coil voltages are 220/240V 50Hz.
LIST NO.
6220S
6420S
7440S
7463S
DESCRIPTION
CONTACTOR
Contactor rating (lth)
20A
20A
40A
63A
Includes manual override?
No
No
No
No
No. of poles (normally open only)
2
4
4
4
Width in 18mm modules
1
2
3
3
Rated Voltage (V)
(i) Insulation (Ui)
(ii) Max. operating (Ue)
400
250
500
415
500
415
500
415
Average consumption of – inrush
control circuit coil (VA) – closed
15
3.8
34
4.6
53
6.5
53
6.5
Terminal cable capacity (max.) Controls
2 x 2.5mm
2
flexible
2 x 1.5mm
2
rigid
Power
2 x 2.5mm
2
flexible
2 x 6mm
2
rigid
2 x 4mm
2
flexible
2 x 25mm
2
rigid
Torque for terminals
1.2Nm
2.0Nm
FEATURES
l
Compatible with all Sentry Consumer Units (single phase only)
(excludes 5502s) and the following Sentry enclosures: 5504s,
5604s, 5704s, 5702s (for single and three phase)
l
Suitable for heating, lighting and ventilation circuits
l
Choice of functions
l
Ideal for use with REC supply off‑peak tariffs
Sentry Technical
Contactors
Installation
a) When a contactor is mounted alongside an MCB of greater than
10 amp current rating, or two contactors are mounted alongside
an MCB of any current rating, it is advisable to insert a module
blank between them. (List No. 5544s.)
b) When mounting more than two contactors side by side, it is
necessary to insert a module blank between every two contactors,
to give ventilation.
c) When using dual rail consumer units, it is advisable to mount
electronic products on the lower rail and contactors on the upper
rail. If mounting in a single rail consumer unit, it is advisable
to mount electronic products as far away as possible from
contactors. As a minimum they should be spaced by a single
module width blank.
d) Ensure the load to be controlled is protected against short
circuit and overload conditions by a suitable rated Sentry MCB.
e) Contactors are mounted into Sentry Consumer Units and
enclosures, by clipping onto the DIN rail mounted in the base by
means of the spring clip. If the contactor is required to be removed
for any reason, unclip the contactor from the DIN rail by means of
the spring clip on the contactor.