063960 Moeller

What is a three-phase commoning link used for?

It is used to create a shared three-phase line-side feed so multiple motor-protective circuit-breakers can be supplied in parallel from one incoming three-phase supply, reducing individual jumper wiring.

Which device range is this commoning link designed to fit?

It is designed for Moeller/Eaton PKZM0 series motor-protective circuit-breakers and PKE devices, provided they are used without side-mounted auxiliary contacts or shunt releases.

Can it be used when side-mounted auxiliary contacts or shunt releases are fitted?

No. This style is intended for assemblies without side-mounted auxiliary contacts or shunt releases, as those accessories can interfere with the side profile and fitment.

Where does it connect on the circuit-breaker?

It is intended for parallel power feed on the line-side terminals 1, 3, and 5 of compatible motor-protective circuit-breakers.

What are the main electrical ratings to consider?

Key ratings include a maximum rated operational voltage of up to 690 V AC and a rated uninterrupted current of 63 A (values commonly referenced for Moeller 063960). Always verify suitability against the full assembly design and protective coordination.

What type of electrical connection does it use?

It uses a fork-connector style interface intended to mate with the compatible device terminal arrangement for quick commoning across phases.

Is the link insulated?

Yes. It is an insulated, touch-protected design intended to be short-circuit proof as an accessory within the compatible starter/circuit-breaker assembly.

How many devices can be fed from one link?

It is designed to common a group of devices in a row; the practical number depends on the specific starter layout and the link variant/spacing used. This particular version is commonly used for multi-device feeding in compact motor starter assemblies.

Can the link be extended or adapted during installation?

It is described as extendable by rotating during installation, allowing flexibility in how the commoning link is positioned within the assembly (subject to the mechanical arrangement of the devices).

How much panel space should be allowed for this accessory?

The unit width is 45 mm, and the overall length is approximately 180 mm, which helps when planning rail layout and clearances in a control panel.

Does it support a neutral pole connection?

No. It is a three-phase commoning link and is not intended for neutral-pole distribution.

Which standards or approvals are typically associated with this accessory?

It is typically referenced with industrial control and low-voltage switchgear standards such as IEC 60947-4-1, and it is commonly associated with UL 508 and CSA C22.2 No. 14 approvals when used within appropriate assemblies.