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Siemens E43B070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Siemens
E43B070
Molded Case Circuit Breaker
Brand
Siemens
SKU
E43B070
Quantity
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Siemens E43B070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, this 70A molded case circuit breaker delivers robust thermal-magnetic protection. The E43B070 features reverse feed capability and a fixed trip unit. It installs into Siemens Sentron panelboards, SB switchboards, and legacy ITE F-Series enclosures. For modern upgrades, this unit is officially replaced by the ED43B070 model. With an interrupting capacity of 18 kAIC at 480VAC, it handles demanding tasks while maintaining HACR certification.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E43B070 |
| Series | E4 |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 30kA @ 250VDC |
| Frame Type | E4 |
|---|---|
| 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 |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
5 answersWhat is the direct replacement for the Siemens E43B070 circuit breaker?
The E43B070 is a legacy E4 frame breaker that has been officially replaced by the Siemens ED43B070. The ED43B070 shares the same physical dimensions, bolt-on mounting, and electrical ratings for modern upgrades.
Which enclosures are compatible with the E43B070?
This bolt-on branch breaker is designed for Siemens Sentron panelboards, SB switchboards, and legacy ITE F-Series enclosures. It is not compatible with standard plug-on residential load centers.
Can the Siemens E43B070 be reverse fed?
Yes, the E43B070 features reverse feed capability, allowing it to be wired for back-feeding applications without compromising its thermal magnetic protection.
Is the E43B070 HACR rated?
Yes, this circuit breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment.
Are the trip settings on the E43B070 adjustable?
No, it features a non-interchangeable, fixed thermal magnetic trip unit. Both the long-time overload and instantaneous short-circuit functions are fixed and cannot be adjusted in the field.
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