Siemens ED42M030 Molded Case Circuit Breaker
- 30A
- 2 Pole
- Bolt-On
Siemens
ED42M030
Molded Case Circuit Breaker
Brand
Siemens
SKU
ED42M030
Quantity
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Siemens ED42M030 - 30A 2 Pole Molded Case Circuit Breaker
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Description
Built for demanding commercial and industrial environments, the Siemens ED42M030 is a 2-pole, 30A molded case circuit breaker. Designed with a bolt-on mounting style, it fits perfectly into Siemens P1, P2, and P3 panelboards. The breaker accommodates 10-1/0 AWG copper or aluminum wire. It features a 50°C ambient calibration, HACR rating, and reverse feed capability. The unit provides reliable long-time and instantaneous protection with 18kAIC at 480VAC.Specifications
| Brand | Siemens |
|---|---|
| Series | ED4 |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 10-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 10 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 50C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 50C Ambient Calibration |
Product FAQs
8 answersWhat panelboards are compatible with the ED42M030?
This bolt-on ED frame breaker is designed for direct installation into Siemens P1, P2, and P3 commercial panelboards. It is not compatible with standard residential load centers.
What does the "M" in the ED42M030 catalog number indicate?
The "M" designates that this breaker is calibrated for a 50 degrees Celsius (122 degrees Fahrenheit) ambient temperature. Standard ED4 breakers are typically calibrated for 40 degrees Celsius.
What wire sizes are supported by the load lugs on this breaker?
The load lugs on the ED42M030 accept 10 AWG to 1/0 AWG wire and are dual-rated for both copper (Cu) and aluminum (Al) conductors.
Can the ED42M030 replace older I-T-E circuit breakers?
Yes. Siemens acquired I-T-E and continues to manufacture the ED frame. This breaker can directly replace older I-T-E or Gould ED4 breakers with matching specifications.
Is this breaker suitable for DC circuits?
Yes, the ED42M030 is rated for use in DC applications up to 250VDC, where it provides a 30kAIC interrupting rating.
Are the trip settings on the ED42M030 adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous (LI) protection settings are factory calibrated and cannot be adjusted in the field.
How does the interrupting capacity change based on the AC voltage?
The ED42M030 provides a standard breaking capacity of 18kAIC at 480VAC. When used in 240VAC applications, the interrupting rating increases to 65kAIC.
How does the thermal-magnetic trip mechanism operate?
The thermal component provides delayed tripping for sustained overloads, preventing nuisance trips from temporary surges. The magnetic component provides instantaneous tripping to protect the circuit during severe short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 20 reviews.
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Rating
20 reviews
- GGGerson G.Verified BuyerReviewingSiemens ED43B100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Siemens ED43B100 breeaker
Breaker arrived even earlier than expected. In great condition and very well packaged. Customer service was helpful and resolve all questions.
- KLKristofer L.Verified BuyerReviewingSiemens ED43B015 - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/1/26Product delivered was perfect.
This was my first order with Super Breakers so you just don't know what you will get. My products came quickly and just as described. I was very pleased with my experience and will use them in the future.
- SWScott W.Verified BuyerReviewingSiemens ED43S100A - 100A 3 Pole Molded Case SwitchI recommend this productRated 5 out of 5 stars6/10/26Great transaction
We received the breaker we needed in great shape and in a timely manner!
We will defiantly be ordering from Super breaker again.
- KKKurt k.Verified BuyerReviewingSiemens ED43B080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/18/26Fast shipping
I needed the breaker quickly for a job. It arrived earlier than I expected which kept the job moving along.
- MSmark s.Verified BuyerReviewingSiemens ED41B020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/16/26Exactly what I ordered
I ordered 12 Siemens breakers. My order was exactly what I ordered, They came fast, and everything was in good shape. I will be using superbreakers in the future.