You may also like
Manufacturer Resources
Product Specs
- Contact Configuration:
- 2MK-2BK
- Frame Size:
- K-frame
- Series:
- Series C
- Special Features:
- Pigtail leads
- Used With:
- For type K-frame breakers
- Department:
- Electrical
- Product Group:
- Sensors & Switches
- Product Subgroup:
- Switches
- Product Type:
- HMCP Alarm switch factory installation kit
- Product Details:
- HMCP Alarm switch factory installation kit
- Mounting Method:
- Right
B-LINE A2L3RPK – Frequently Asked Questions
1) Will the A2L3RPK alarm switch kit fit my Eaton Series C breaker?
The A2L3RPK is built for Eaton Series C molded case breakers in the K-frame size only. If the breaker in your panel is a different frame (F, J, L and so on), this kit will not mount. Check the frame designation on the breaker face before ordering.
2) What contact arrangement does the A2L3RPK alarm switch give me?
Contacts are configured 2MK-2BK, so you get two make and two break contacts off the one accessory. That lets you run a local annunciation circuit and a separate remote or BMS input from the same trip event without adding a second switch.
3) Which side of the breaker does the A2L3RPK mount on?
Right-hand mounting. The accessory pocket on the right side of the K-frame breaker is where this one goes, which matters if you are also adding a shunt trip or undervoltage release and need the opposite pocket left free.
4) Does the A2L3RPK come with wire leads or do I have to land it on terminals?
It ships with pigtail leads, so wiring is a splice at the leads rather than a terminal block landing. Plan for enough gutter space and a wire management path out of the breaker compartment.
5) What is the difference between an alarm switch and an auxiliary switch on a molded case breaker?
An alarm switch like the A2L3RPK signals only when the breaker has tripped on a fault or overload, not when someone switches it off by hand. An auxiliary switch follows the handle position regardless of why it moved. For MRO and facility monitoring where you want to know about a genuine trip, the alarm switch is the one you want.
6) Is the A2L3RPK a field-installable accessory or a factory item?
It is catalogued as a factory installation kit for HMCP alarm switch duty on K-frame Series C breakers. Treat it as an accessory intended to be fitted into the breaker's accessory cavity as part of the breaker build rather than a snap-on retrofit done live in the panel.
7) What part number do I quote for the Eaton K-frame right-mount alarm switch kit?
Order by MPN A2L3RPK, B-Line, Series C. One model covers the K-frame right-mount 2MK-2BK configuration, so there are no finish or length options to specify.
How fast can I get the B-LINE A2L3RPK 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 A2L3RPK come with a warranty?
Absolutely. The B-LINE A2L3RPK 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 A2L3RPK?
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 A2L3RPK from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.