3VA9482-0WA00

What is this accessory used for?

This accessory is a set of phase barriers designed to help maintain separation between phases on compatible Siemens moulded case circuit breakers. It is used as an insulation accessory rather than as a switching or protection device.

Which breaker ranges is it designed to fit?

It is intended for Siemens 3VA1 400/630 and 3VA2 400/630 series circuit breakers. In practical terms, it is matched to the 400-frame and 630-frame versions within those ranges.

How many barriers are included in one set?

One set includes 2 phase barriers. Siemens 3VA9482-0WA00 is supplied as a two-piece accessory.

Where is this accessory typically fitted?

It is fitted at the breaker connection area where additional phase separation is required. Depending on the installation arrangement, it may be used at the feeding point or alongside other insulation measures specified for the assembly.

Is this a circuit breaker or a spare internal component?

No. This is not a circuit breaker and it is not an internal trip or switching component. It is an external accessory used with compatible 3VA breakers.

When are phase barriers normally required?

Phase barriers are commonly used when an installation needs defined phase-to-phase insulation measures or when the connection arrangement calls for additional separation. The exact requirement depends on the breaker configuration, terminal arrangement and application voltage.

Does this accessory change the protection settings of the breaker?

No. It does not alter trip settings, breaking capacity or the protection characteristics of the circuit breaker. Its role is mechanical and insulating rather than electrical protection adjustment.

What are the dimensions of the barriers?

The listed dimensions are 87.2 mm and 174.4 mm. These dimensions help confirm physical suitability for the intended 3VA1 and 3VA2 400/630 breaker platforms.

Is it suitable for both the 400 and 630 frame versions?

Yes. This accessory is specified for the 400 and 630 frame sizes within the Siemens 3VA1 and 3VA2 families.

Can this accessory be used on equipment outside the stated breaker families?

It should be selected for the breaker families it was designed for, namely 3VA1 400/630 and 3VA2 400/630. If the breaker falls outside those ranges, a different insulation accessory may be needed.

Why would an installer choose phase barriers instead of leaving the connections open?

Phase barriers help provide a more controlled connection layout by increasing separation between adjacent phases. This can be important where the assembly arrangement needs to meet specified insulation clearances.

Is this accessory usually used on its own?

Not always. In some breaker arrangements it may be used on its own, while in others it can be paired with additional covers or related insulation accessories to meet the required configuration.