Siemens HEG3B110 Molded Case Circuit Breaker
- 110A
- 3 Pole
- Unit Mount
Quantity
Siemens HEG3B110 - 110A 3 Pole Molded Case Circuit Breaker
New
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Description
The HEG3B110 is a 3-pole, 110A molded case circuit breaker from the Siemens Sentron VL series. It provides reliable overcurrent protection for heavy-duty commercial and industrial electrical systems. This unit-mount breaker installs into Siemens P4 and P5 panelboards, switchboards, and enclosures. Line and load lugs are not included. It serves as a predecessor to the newer 3VA5111-6ED31-0AA0 model. Rated for 65 kAIC at 480VAC, it features a thermal-magnetic trip unit.Specifications
| Brand | Siemens |
|---|---|
| Series | HEG |
| Amperage | 110A |
| 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 | 6-3/0 AWG (Cu/Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 6 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
6 answersWhich Siemens panelboards are compatible with the HEG3B110 breaker?
This EG frame breaker is designed for use in Siemens P4 and P5 panelboards, as well as compatible switchboards, motor control centers, and standalone enclosures.
What wire sizes are accepted by the standard lugs on the HEG3B110?
The factory lugs accept 6 AWG to 3/0 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors. Ensure proper torque specifications are followed during installation.
Can the trip settings on the HEG3B110 be adjusted in the field?
Yes, this thermal magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element. The adjustable magnetic trip allows you to tune the instantaneous response to accommodate specific motor inrush currents or coordination requirements.
Is the HEG3B110 rated for use in DC circuits?
Yes, it carries DC interrupting ratings of 42kA at 250VDC and 35kA at 500VDC, making it suitable for specific direct current applications alongside its standard AC ratings.
How does the HEG3B110 mount inside an enclosure or panel?
It is a unit mount, bolt-on circuit breaker. It requires bolted connections to the bus or mounting surface rather than snapping or plugging into place.
What breaker family and frame type does the HEG3B110 belong to?
It is part of the Siemens Sentron series and utilizes the EG frame, which falls under the broader VL frame group of molded case circuit breakers.
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