26
Carlo Gavazzi LTD
RSWT
RSWT DS ENG
17/05/2018
Short circuit protection
Co-ordination Type 1 (UL508) – Time Delay Fuses
Part No.
Max. fuse size [A]
Class
Current [kA]
Max. voltage [VAC]
RSWT..12.V….
20
RK5
5
600
RSWT..16.V….
20
RK5
5
600
RSWT..25.V….
25
RK5
5
600
RSWT..32.V....
60
RK5
5
600
RSWT..37.V....
60
RK5
5
600
RSWT..45.V....
60
RK5
5
600
RSWT..55.V....
60
RK5
5
600
RSWT..70.V....
100
RK5
10
600
RSWT..90.V....
100
RK5
10
600
Co-ordination Type 1 – Manual Motor Starters
Item No.
Model No.
Current [kA]
Max. voltage [VAC]
RSWT..12.V….
GMS32H-17A
5 / 3
400 / 600
RSWT..16.V….
GMS32H-17A
5 / 3
400 / 600
RSWT..25.V….
GMS32H-32A
5 / 3
400 / 600
RSWT..32.V....
GMS32H-32A
10
400
RSWT..37.V....
GMS63H-40A
10
400
RSWT..45.V....
GMS63H-50A
10
400
RSWT..55.V....
GMS63H-63A
10
400
RSWT..70.V....
GMS100S-75A
10
400
RSWT..90.V....
GMS100S-100A
10
400
Products protected with manual motor starters must be wired with a minimum length of 1.5m Cu wire conductor. For products rated
12, 16, 25A the maximum cross sectional area shall be of 2.5 mm
2
, for products rated 32, 37, 45, 55A the maximum cross-sectional area
shall be of 16 mm
2
and for products rated 70, 90A this shall be of a maximum of 50mm
2
.
The length includes the conductors from the voltage source to the manual manual starter, from the manual motor starter to the soft starter
and from the soft starter to the load.
Protection Co-ordination, Type 1 vs Type 2:
Type 1 protection implies that after a short circuit, the device under test will no longer be in a functioning state.
In Type 2 co-ordination the device under test will still be functional after the short circuit. In both cases, however the short circuit has to
be interrupted. The fuse between enclosure and supply shall not open. The door or cover of the enclosure shall not be blown open. There
shall be no damage to conductors or terminals and the conductors shall not separate from terminals. There shall be no breakage or crack-
ing of insulating bases to the extent that the integrity of the mounting of live parts is impaired. Discharge of parts or any risk of fire shall
not occur.
The product variants listed in the table hereunder are suitable for use on a circuit capable of delivering not more than 5,000A* rms
Symmetrical Amperes, 400 or 600 Volts maximum when protected by fuses. Tests at 5,000A* were performed with Class RK5 fuses, fast
acting; please refer to the table below for maximum allowed ampere rating of the fuse. Use fuses only.
* For RSWT..70, RSWT..90 models 10,000 symmetrical amperes apply.
