Siemens E42B030 Molded Case Circuit Breaker
- 30A
- 2 Pole
- Bolt-On
Quantity
Siemens E42B030 - 30A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for commercial and industrial applications, the Siemens E42B030 is a 2-pole, 30A molded case circuit breaker from the legacy E4 frame family. It provides thermal-magnetic trip protection with a 65kAIC rating at 240VAC and 18kAIC at 480VAC. This bolt-on unit mounts into classic Siemens or ITE Sentron panelboards, switchboards, and motor control centers. As a discontinued model, it is commonly replaced by the modern ED42B030 (ED4 frame) for system upgrades.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E42B030 |
| Series | Type E4 |
| Amperage | 30A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | E4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| 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 Side Lugs Included (LN1E100) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, HID Rated |
Product FAQs
6 answersWhat panels are compatible with the Siemens E42B030 circuit breaker?
This bolt-on breaker is designed for use in classic Siemens and ITE Sentron panelboards, switchboards, and motor control centers.
Is the E42B030 still in active production?
The E42B030 is a legacy E4 frame breaker. For system upgrades or new installations, it is commonly replaced by the modern ED4 frame equivalent, catalog number ED42B030.
What wire sizes and materials are accepted by the lugs on the E42B030?
The included lugs accept 10 AWG to 1/0 AWG copper or aluminum wire.
Can the E42B030 be used in DC applications?
Yes, this breaker is rated for up to 250VDC with a 30kA interrupting capacity, making it suitable for specific direct current systems alongside its standard AC ratings.
How does the E42B030 mount into the panel?
It features a bolt-on connection type, which securely fastens the breaker directly to the busbar in compatible Sentron enclosures.
What type of trip unit does the E42B030 use?
It uses a fixed thermal magnetic trip unit, providing both long-time and instantaneous (LI) trip functions to protect against overloads and short circuits.
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