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Manufacturer Resources
Product Specs
- Series:
- Series C
- Shaft Length:
- 4 feet
- Used With:
- K-frame
- Department:
- Electrical
- Product Group:
- Enclosures & Boxes
- Product Subgroup:
- Locks & Handles
- Product Type:
- Flex shaft handle mechanism
- Product Length:
- 19 IN
- Product Details:
- Flex shaft handle mechanism
- Product Height:
- 2.5 IN
- Product Weight:
- 8 LB
- Product Width:
- 19 IN
B-LINE F3S04CX – Frequently Asked Questions
1) What breaker frame does the B-Line F3S04CX flex shaft handle mechanism work with?
The F3S04CX is built for Eaton Series C K-frame molded case circuit breakers. If your breaker is a different frame size, this mechanism is not the right part, so confirm the frame designation stamped on the breaker before ordering.
2) How long is the flex shaft on the F3S04CX handle mechanism?
Four feet of flex shaft. That is what sets how far the external operating handle can sit from the breaker itself, so measure from the breaker's operating mechanism to your intended handle location on the enclosure door or side panel and make sure the run, including any bends, stays inside 4 feet.
3) What does a flex shaft handle mechanism actually do on a molded case breaker?
It moves the breaker's operating handle out to the outside of the enclosure. Instead of opening the door to switch the breaker, an electrician turns an external handle that drives the breaker through a flexible shaft. On the F3S04CX that shaft is 4 feet long, which lets the handle be mounted away from the breaker position rather than directly in front of it. It is the alternative to a direct rotary handle, which requires the handle to line up close to the breaker.
4) Will the F3S04CX fit in my enclosure, and what clearance do I need?
Plan for a shipped package footprint of 19 x 19 x 2.5 inches for the mechanism assembly and 4 feet of flex shaft that has to be routed inside the enclosure without tight kinks. On shallow enclosures the shaft routing, not the handle, is usually the limiting factor, so lay out the run from the breaker to the handle position before you cut the door.
5) Is the F3S04CX the same thing as a rotary handle kit for a K-frame breaker?
No. A rotary handle kit couples the handle directly over the breaker, so the handle position is fixed by where the breaker sits. The F3S04CX instead uses a 4 foot flexible shaft, so the operator can be placed remotely on the enclosure. Pick the flex shaft version when the breaker is offset, buried in a deep enclosure, or you need the operator at a specific height for access.
6) How much does the B-Line F3S04CX weigh?
8 pounds for the complete mechanism. That matters for door-mounted installs on lighter sheet metal enclosure doors, where a technician may want the handle on the frame or side panel rather than a thin hinged door.
7) What is the manufacturer part number for this Eaton Series C handle mechanism?
Order it as F3S04CX, a B-Line part for Eaton Series C K-frame molded case breakers. That is the number to quote for a distributor cross-reference or a spec submittal.
How fast can I get the B-LINE F3S04CX delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE F3S04CX come with a warranty?
Absolutely. The B-LINE F3S04CX is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE F3S04CX?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the B-LINE F3S04CX from ZenSupply?
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