Siemens HB3B020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Quantity
Siemens HB3B020 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the BQ family, the Siemens HB3B020 delivers robust commercial and industrial power distribution. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous trip functions. This HBQ type breaker bolts into Siemens and legacy ITE Series 1-5 panelboards, ensuring a secure connection. Delivering a high interrupting capacity of 65kA at 240VAC, it is HACR rated and built to handle demanding electrical loads safely.Specifications
| Brand | Siemens |
|---|---|
| Series | HBQ |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | BQ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens/ITE Legacy Panelboards (Series 1-5) |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
5 answersWhat panelboards are compatible with the HB3B020 circuit breaker?
This bolt-on breaker is designed specifically for use in legacy Siemens and ITE Series 1 to 5 panelboards. It features a bolt-on connection and is not compatible with standard plug-on load centers.
What does the HBQ designation mean compared to standard BQ breakers?
The HBQ designation indicates a high interrupting capacity version of the standard BQ frame. While standard BQ breakers are designed for lower fault currents, the HB3B020 provides a 65kAIC rating at 240VAC for systems with higher available fault currents.
What wire sizes are accepted by the factory lugs on the HB3B020?
The load side lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire. Always ensure the connections are torqued to the manufacturer specifications during installation.
Does the HB3B020 provide ground fault or arc fault protection?
No, this is a standard thermal-magnetic circuit breaker. It provides long-time and instantaneous trip functions for overload and short-circuit protection, but it does not include GFCI or AFCI circuitry.
Can I use the HB3B020 to replace an older ITE 20A 3-pole bolt-on breaker?
Yes, Siemens acquired ITE and maintains the BQ and HBQ frame designs. The HB3B020 serves as a direct replacement for legacy ITE breakers with the exact same frame, amperage, and voltage specifications.
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