Siemens ED42M020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Siemens
ED42M020
Molded Case Circuit Breaker
Brand
Siemens
SKU
ED42M020
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Siemens ED42M020 - 20A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Siemens ED42M020 is a 2-pole, 20A molded case circuit breaker from the SENTRON family. This bolt-on breaker installs into Siemens P1, P2, and P3 panelboards. It serves as a replacement for the standard 40°C ED42B020 when a 50°C rating is required. Delivering 65kAIC at 240VAC and 18kAIC at 480VAC, it features fixed thermal-magnetic trip technology, reverse feed capability, and load side lugs.Specifications
| Brand | Siemens |
|---|---|
| Series | ED4 |
| Amperage | 20A |
| 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 | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Side Lugs (SA1E025) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 50C |
| Construction Features | 50C Ambient Calibration, HACR Rated, HID Rated, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the ED42M020 circuit breaker?
This ED frame breaker is designed for installation in Siemens P1, P2, and P3 panelboards. It requires a bolt-on connection to the panel bus.
What wire sizes are accepted by the lugs on the ED42M020?
The standard factory lugs accommodate 14 to 10 AWG copper conductors or 12 to 10 AWG aluminum conductors. Always verify the specific torque requirements printed on the breaker faceplate before terminating the wires.
Can the ED42M020 be used in direct current (DC) applications?
Yes, this thermal magnetic breaker carries a DC rating of 250VDC with an interrupting capacity of 30kA. It is suitable for protecting compatible DC circuits.
What is the interrupting capacity of this breaker at 480VAC?
When installed in a 480VAC system, the breaker provides an 18kAIC interrupting rating. If your application requires a higher fault current rating at 480V, you will need to evaluate a different frame class or verify series combination ratings with your Siemens panelboard.
Does the ED42M020 include adjustable trip settings?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection without field adjustability.
What is the proper mounting method for the ED42M020?
This breaker utilizes a bolt-on connection type. Ensure the panelboard is completely de-energized before bolting the breaker to the bus to prevent arc flash hazards and ensure a secure mechanical connection.
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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.