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Siemens HED42B110 Molded Case Circuit Breaker
- 110A
- 2 Pole
- Bolt-On
Siemens
HED42B110
Molded Case Circuit Breaker
Brand
Siemens
SKU
HED42B110
Quantity
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Siemens HED42B110 - 110A 2 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty environments, the Siemens HED42B110 is a 2-pole, 110A molded case circuit breaker. Belonging to the Sentron ED-Frame lineup, it delivers fixed long-time and instantaneous (LI) trip functions to safeguard electrical networks. Designed with a bolt-on mounting style, it integrates into Siemens Sentron panelboards and SB switchboards. It includes load-side lugs and is replaced by the 3VA5111-6ED21-0AA0. With a 42kAIC rating at 480VAC, it safely clears severe faults.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HED42B110 |
| Series | HED4 |
| Amperage | 110A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 42kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | HED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, SB Switchboards, Motor Control Centers |
| Wire Gauge | 10 AWG - 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs (LN1E100) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, High Interrupting Capacity, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat panelboards are compatible with the HED42B110 circuit breaker?
This ED-frame breaker is designed for use in Siemens Sentron panelboards, SB switchboards, and compatible motor control centers. It requires a bolt-on connection to the panel bus and cannot be used in plug-on load centers.
What is the difference between the Siemens HED42B110 and the ED42B110?
Both are 110A, 2-pole ED-frame breakers with the same physical footprint, but the HED42B110 is the high-interrupting version. The HED42B110 provides a 42kAIC rating at 480V, whereas the standard ED42B110 is rated for 18kAIC at 480V.
Is there a newer replacement for the HED42B110?
Yes, Siemens is transitioning legacy ED-frame breakers to the newer 3VA5 architecture. The direct modern replacement for this unit is catalog number 3VA5111-6ED21-0AA0.
What wire sizes are accepted by the lugs on the HED42B110?
The factory-installed load-side lugs accept copper or aluminum conductors ranging from 10 AWG to 1/0 AWG. Ensure proper torque specifications are followed during installation.
What type of trip unit is installed in the HED42B110?
It features a fixed thermal-magnetic trip unit. This provides long-time (thermal) protection against overloads and instantaneous (magnetic) protection against short circuits. The trip settings are factory-sealed and non-adjustable.
Can the HED42B110 be used in DC applications?
Yes, this breaker is rated for 250VDC systems with an interrupting capacity of 30kAIC, making it suitable for specific industrial DC control circuits or battery backups.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
Total 5 star reviews: 13 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
13 reviews
- PMPete M.Verified BuyerReviewingSiemens HED43B060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/26Good price - Best website
Awesome price on an item. easy to use website made finding the right breaker and purchasing it super easy
- BCBrad C.Verified BuyerReviewingSiemens HED43B070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/12/26Thank You
The breaker works perfectly, but I'm more impressed by the fast, prompt delivery. Will be using you again, thank you.
- MLMichael L.Verified BuyerReviewingSiemens HED43B020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/15/26Siemens breaker
Return customer, always great service and quick delivery. A+++
- JMJonathan M.Verified BuyerReviewingSiemens HED43B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/10/26Breaker
Fast Delivery, just what I ordered !!
- RFRussell F.Verified BuyerReviewingSiemens HED41B040 - 40A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/6/26Just what I ordered
Straight forward, simple process. On time delivery.