Siemens / Murray MURRAYC2100 MP2100 - 100A 2 Pole Miniature Circuit Breaker
- 100A
- 2 Pole
- Plug-On
Quantity
Siemens / Murray MP2100 - 100A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
Description
Serving as a robust 100A solution, the MURRAYC2100 is a 2-pole miniature circuit breaker from Siemens. It delivers thermal-magnetic protection for 120/240V applications. Engineered for compatibility, it installs into legacy Murray load centers and modern Siemens panels. It acts as a direct replacement for older units and crosses to the Q2100. With a 10kAIC rating and Insta-Wire technology, this plug-on breaker ensures a secure fit for main or heavy branch circuits.Specifications
| Brand | Siemens / Murray |
|---|---|
| Part Number | MURRAYC2100-R |
| Series | MP |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Murray Load Centers, Siemens Load Centers |
| Wire Gauge | 8-2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, HACR Rated, Common Trip |
Product FAQs
7 answersCan the Murray MP2100 be installed in a Siemens load center?
Yes. Siemens acquired Murray and officially cross-listed these product lines. The MP2100 is UL listed for use in both legacy Murray load centers and compatible Siemens panels that accept Type MP-T or Type QP breakers.
What is the active Siemens replacement for the discontinued Murray MP2100?
Siemens has phased out the Murray brand. The direct, UL-listed modern equivalent for the MP2100 is the Siemens Q2100, which is a Type QP circuit breaker.
Does the MP2100 provide common-trip functionality?
Yes. As a 2-pole thermal-magnetic breaker, it features an internal common trip. An overcurrent or short circuit on either phase will force both poles to trip simultaneously, ensuring complete disconnection of the 240V circuit.
What are the wiring requirements for the MP2100 terminal lugs?
The lugs accept 8 AWG to 2/0 AWG conductors and are dual-rated for copper or aluminum wire. When using aluminum conductors, an approved oxide-inhibiting joint compound should be applied prior to termination.
Is the MP2100 HACR rated for HVAC applications?
Yes, Type MP-T breakers like the MP2100 are HACR rated. This makes the 100A breaker suitable for protecting heating, air conditioning, and refrigeration equipment circuits that require a 100A disconnect.
Will this breaker fit in older Murray panels manufactured before 2002?
Yes. While Siemens issued a UL compatibility letter for panels made after January 2002, the MP2100 is an original Murray Type MP-T breaker. It serves as the exact OEM replacement for older Murray load centers that specify Type MP-T breakers on their internal wiring diagram.
What does the LI trip function code mean on the MP2100?
The LI designation indicates that this thermal-magnetic breaker provides both Long-Time (thermal) protection against sustained overloads and Instantaneous (magnetic) protection against short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
- JVJulie V.Verified BuyerReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars3/5/26on breaker
so far so good on the refurbished breaker
- JFJon F.ReviewingSiemens / Murray MP250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/17/20Sales
Fantastic group to work with...
- DSDavid S.ReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars1/5/20Thank you so much for
Thank you so much for sending me a 100 amp breaker that was in the condition that you said it would be in.With out your breaker I would still be in the dark Thank you David
- RARichard A.ReviewingSiemens / Murray MP2100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/13/19Awesome!
Your prices and number of available items to choose from is Awesome!