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Siemens HGB2B020B Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Siemens
HGB2B020B
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGB2B020B
Quantity
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Siemens HGB2B020B - 20A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial distribution, the Siemens HGB2B020B is a 2-pole, 20A molded case circuit breaker from the SENTRON GB frame series. It provides reliable thermal-magnetic overcurrent protection for branch circuits requiring high interrupting capacity. This bolt-on breaker installs into Siemens P1, P2, P3, P4, and P5 panelboards. For modern upgrades, it can be replaced by the 3VA5120-5ED22-0AA0 when used with the appropriate mounting kit.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGB2B020B |
| Series | HGB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480Y/277VAC, 600Y/347VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 35kA @ 480Y/277VAC, 14kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Frame Type | HGB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3, P4, P5 Panelboards |
| Wire Gauge | 14-10 AWG (Cu/Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 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, Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity |
Product FAQs
8 answersWhat panelboards are compatible with the HGB2B020B circuit breaker?
This bolt-on breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards. It mounts directly to the panelboard bus and is intended for branch applications where GB frame breakers are accepted.
What is the difference between the Siemens NGB2B020B and HGB2B020B?
Both are 20A, 2-pole GB frame breakers that fit the same panelboards, but the HGB2B020B features a higher interrupting rating. The HGB provides up to 100kA at 240V AC and 35kA at 480V AC, whereas the standard NGB frame has lower short-circuit ratings.
What wire sizes and materials are accepted by the lugs on this breaker?
The load-side lugs accept 14 AWG to 10 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors.
Can the HGB2B020B be used in DC voltage applications?
Yes, this breaker is rated for DC applications, providing an interrupting rating of 14kA at 125/250V DC.
Does this breaker have adjustable trip settings?
No, it features a fixed thermal and fixed magnetic (LI) trip unit. It provides non-adjustable long-time and instantaneous overcurrent protection.
Can this breaker be mounted on a standard DIN rail?
No, the HGB frame is specifically configured with a bolt-on line end for panelboard mounting. For DIN rail or base mounting without adapters, a GG frame breaker is required instead.
What does the H in the HGB frame designation indicate?
The H indicates that it is the High Interrupting capacity version of the Siemens GB frame family, offering higher fault current protection than the standard NGB series.
Are the load lugs included with the HGB2B020B?
Yes, load-side lugs are included as standard for terminating the branch circuit conductors.
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