Siemens HEG3B100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Unit Mount
Quantity
Siemens HEG3B100 - 100A 3 Pole Molded Case Circuit Breaker
New
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Description
Engineered for robust power distribution, the Siemens HEG3B100 is a 3-pole, 100A molded case circuit breaker. As part of the Sentron VL series EG-frame lineup, it delivers fixed thermal and adjustable magnetic (LI) protection for commercial and industrial facilities. This unit mounts into Siemens P4 and P5 panelboards, switchboards, and motor control centers. It features a 65 kAIC rating at 480VAC and a trip-free mechanism. Lugs are not included. It is replaced by the 3VA5110-6ED31-0AA0.Specifications
| Brand | Siemens |
|---|---|
| Series | HEG |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 42kA @ 250VDC, 35kA @ 500VDC |
| Frame Type | EG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4, P5 Panelboards, Switchboards, Motor Control Centers, Enclosures |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
5 answersWhat is the direct replacement for the HEG3B100?
The HEG3B100 has been replaced by the Siemens 3VA5110-6ED31-0AA0. The newer 3VA series molded case circuit breakers offer a nearly identical footprint, allowing for straightforward upgrades in existing electrical apparatus.
Can the HEG3B100 be reverse fed?
Yes, this breaker is suitable for reverse feed applications. It features a non-interchangeable trip unit and lacks line and load markings, allowing power to flow in either direction without compromising the trip mechanism.
Which panelboards accept the HEG3B100 circuit breaker?
This EG-frame breaker is designed for unit mounting in Siemens P4 and P5 panelboards, as well as compatible switchboards, motor control centers, and standalone enclosures.
What lug kit is required for the HEG3B100?
The standard lug kit for this 100A EG-frame breaker is the 3TA1EG10. These lugs accommodate 14 to 1/0 AWG copper or aluminum conductors.
How does the adjustable magnetic trip function benefit this breaker?
While the thermal overload protection is fixed, the adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit response. This adjustability helps coordinate with downstream devices and prevents nuisance tripping from high inrush currents.
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