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Information about installation, assembly and attachment

3VA1 160 1-pole and 2-pole molded case circuit breakers

3VA1 160 1-pole molded case circuit breakers

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To attach these to a DIN rail, a 3VA9181‑0SH10 DIN rail adapter is required. This DIN rail adapter is not attached by screws to the molded case circuit breaker, but simply snapped into place on the rear panel.

3VA1 160 2-pole molded case circuit breakers

To attach 2‑pole molded case circuit breakers to 35 mm DIN rails, a 3VA9182-0SH10 DIN rail adapter is required. This adapter is fitted with threaded nuts. The molded case circuit breakers are screwed onto the adapter by means of the fastening screws supplied with the circuit breakers. The nuts supplied with the circuit breakers are not required.

3VA1 100 and 3VA1 160 3-pole and 4-pole molded case circuit breakers

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To attach 3‑pole and 4‑pole molded case circuit breakers to 35 mm DIN rails, a 3VA9187-0SH10 DIN rail adapter is required. This adapter is fitted with threaded nuts. The molded case circuit breakers are screwed onto the adapter by means of the fastening screws supplied with the circuit breakers. The nuts supplied with the circuit breakers are not required.

3VA1 100 and 3VA1 160 3-pole and 4-pole molded case circuit breakers with side mounted residual current device

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The 3VA9187‑0SH20 DIN rail adapter has been specially developed for use with molded case circuit breakers combined with side mounted residual current device. This DIN rail adapter is also fitted with threaded nuts so that the molded case circuit breaker/residual current device assembly can be fastened to it by means of the screws included in the scope of supply of both devices.

Assembly instructions

The molded case circuit breaker must first be attached to the DIN rail adapter. 3-pole molded case circuit breakers must be attached such that their right-hand edge (when viewed from above) is flush with the DIN rail adapter. With 4-pole molded case circuit breakers, the N pole is situated opposite on the left-hand side (when viewed from above). The screws are inserted in the fastening holes between phases 1 and 2, and between phases 2 and 3, in the molded case circuit breaker.

After the molded case circuit breaker has been attached to the DIN rail adapter, the residual current device must also be mounted on the adapter. After the residual current device has been secured in position on the DIN rail adapter, the main current paths of the residual current device and the molded case circuit breaker must be checked to ensure that they are properly aligned and connected.

Information about combination with other accessories

DIN rail adapters are normally used to install molded case circuit breakers (possibly with side mounted residual current device) in distribution boards. The standard cover is then fitted over the circuit breakers. The front panel (45 mm high) is the only part of the device which protrudes through the cover. With this arrangement, it is not possible to use front mounted accessories.

When molded case circuit breakers including DIN rail adapter are installed on rails in an open system cubicle without a cover, it is possible to use front mounted accessories such as motor operator, rotary operator with shaft stub, front mounted rotary operator and the front mounted Bowden cable interlock module.

The following accessories are compatible with molded case circuit breakers and DIN rail adapters:

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