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Siemens E43B040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Siemens
E43B040
Molded Case Circuit Breaker
Brand
Siemens
SKU
E43B040
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Siemens E43B040 - 40A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty power distribution, the Siemens E43B040 is a 40A, 3-pole molded case circuit breaker. It utilizes a fixed thermal-magnetic trip unit to safeguard commercial and industrial circuits. The bolt-on design ensures a secure connection within Siemens Sentron panelboards, SB switchboards, and older ITE F-Series enclosures. Delivering an 18 kAIC interrupt rating at 480VAC, this legacy E-Frame component is fully HACR rated and can be replaced by the newer ED43B040.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E43B040-R |
| Series | E4 |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, SB Switchboards, ITE F-Series 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 (Factory Installed) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards are compatible with the E43B040 circuit breaker?
This bolt-on breaker is designed for use in Siemens Sentron panelboards, SB switchboards, and legacy ITE F-Series enclosures.
Is there a newer replacement for the legacy E43B040 breaker?
Yes, the Siemens ED43B040 is the newer ED-frame equivalent that can replace this legacy E-frame component in most applications.
Can this breaker be used in direct current applications?
Yes, it is rated for up to 250VDC with a maximum interrupting capacity of 30kA, making it suitable for specific DC power systems.
What wire sizes are accepted by the standard lugs on this breaker?
The factory-installed load lugs accept 10 AWG to 1/0 AWG copper or aluminum wire.
What does the LI trip function indicate on this breaker?
The LI designation means the breaker features a fixed thermal element for Long-Time overload protection and a fixed magnetic element for Instantaneous short-circuit protection.
Is the E43B040 breaker HACR rated?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Will this breaker replace an older ITE E43B040?
Yes, Siemens acquired ITE, and this breaker serves as a direct replacement for the original ITE E43B040 model.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 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
1 review
- MBMark B.Rated 5 out of 5 stars12/19/23The breaker looked new, worked
The breaker looked new, worked great, and was sold at a great price.