Siemens SENTRON 3WA Air Circuit Breakers

Siemens SENTRON 3WA air circuit breakers are power breakers for main incomers from 630 A to 6300 A at 690 V. The range covers 3-pole and 4-pole fixed and draw-out versions with ETU electronic trip units, with more than 140 products. Stoklink ships worldwide from Turkey and quotes volumes on request.

What's in this range

• 3WA1 breakers from 630 A upward.
• Breaking capacities of 55 kA, 66 kA, 85 kA and 100 kA in the listed parts.
• ETU300 LSI trip units.
• Option plugs and parts: ACB Accessories & Releases.

How to choose

• Rated current and frame must cover the incomer load.
• Breaking capacity at 690 V must exceed the fault level.
• Fixed or draw-out follows the maintenance concept.

FAQ

What does draw-out type mean?

The breaker sits on a carriage and can be racked out of the panel for maintenance, without disturbing the busbar.

What is an option plug on a 3WA?

It is a plug that sets protection functions, such as LSI, on the trip unit.

Do you ship 3WA breakers abroad?

Stoklink ships worldwide from Turkey on EXW terms. Lead time depends on distributor stock, so request a quote with your part numbers and quantities.