Selecting contactors and circuit breakers for use with ATV32

Circuit breakers and/or contactors are frequently requested for use with Altivar 32 (ATV32) AC variable speed drives. The circuit breaker provides protection against accidental short-circuits, disconnection and, if necessary, provides isolation. The contactor controls and manages any protection functions.

A contactor can be used downstream of the drive to help ensure the motor is isolated on stopping. In this case, the contactor size should be category AC-3 depending on the associated motor, only for operation between 25 Hz and 500 Hz. The Altivar 32 drive is protected electronically against short-circuits between phases and between phase and ground. It therefore provides continuity of service and thermal protection of the motor.

Combination options

The proposed combinations can help protect people and equipment when a short-circuit occurs on the power stage. Two types of combination are possible:

1. Drive + circuit-breaker: minimum combination

The circuit-breaker can be mounted directly on ATV32H***M2 and ATV32H037N4…HU40N4 drives using the bracket for GV2/ATV32 direct mounting (VW3A9921) and the adapter plate (GV2AF4)

2. Drive + circuit-breaker + contactor: minimum combination with contactor when a control circuit is needed.

Single-phase supply voltage: 200…240 V 50/60 Hz

Standard 3ph, 4pole motor. kW	Variable Speed Drive	TeSys Circuit Breaker GV2L	TeSys Contactor for when a control circuit is required
0.18	ATV32H018M2	GV2L08	LC1D09**
0.37	ATV32H037M2	GV2L10	LC1D09**
0.55	ATV32H055M2	GV2L14	LC1D09**
0.75	ATV32H075M2	GV2L16	LC1D09**
1.1	ATV32HU11M2	GV2L16	LC1D09**
1.5	ATV32HU15M2	GV2L20	LC1D09**
2.2	ATV32HU22M2	GV2L22	LC1D09**

Three-phase supply voltage: 380…500 V 50/60 Hz

Standard 3ph, 4pole motor kW	Variable Speed Drive	TeSys Circuit Breaker GV2L, GV3L	TeSys Contactor for when a control circuit is required
0.37	ATV32H037N4	GV2L07	LC1D09**
0.55	ATV32H055N4	GV2L08	LC1D09**
0.75	ATV32H075N4	GV2L08	LC1D09**
1.1	ATV32HU11N4	GV2L10	LC1D09**
1.5	ATV32HU15N4	GV2L14	LC1D09**
2.2	ATV32HU22N4	GV2L14	LC1D09**
3	ATV32HU30N4	GV2L16	LC1D09**
4	ATV32HU40N4	GV2L16	LC1D09**
5.5	ATV32HU55N4	GV2L22	LC1D09**
7.5	ATV32HU75N4	GV2L32	LC1D18**
11	ATV32HD11N4	GV3L40	LC1D25**
15	ATV32HD15N4	GV3L50	LC1D3209**

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