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Siemens HGG3B020L Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Siemens
HGG3B020L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGG3B020L
Quantity
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Siemens HGG3B020L - 20A 3 Pole Molded Case Circuit Breaker
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Description
Built for versatile power distribution, the Siemens HGG3B020L is a 20A, 3-pole MCCB. It delivers precise long-time and instantaneous protection for industrial facilities across demanding electrical networks. Designed for unit mounting, this breaker integrates into Siemens P1, P2, and P3 panelboards. It serves as a substitute for the LGG3B020L and includes standard line and load lugs. The HGG frame boasts a 35kA capacity at 480VAC and is HACR, HID, and SWD rated for lighting and HVAC loads.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HGG3B020L |
| Series | HGG |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 208Y/120VAC, 65kA @ 240VAC, 35kA @ 480Y/277VAC, 35kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 250VDC |
| Frame Type | HGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 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, Undervoltage Release |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
Product FAQs
8 answersWhich Siemens panelboards are compatible with the HGG3B020L circuit breaker?
This unit-mount breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and enclosures.
Is the HGG3B020L rated for HVAC and lighting loads?
Yes, this 20A breaker is HACR rated for heating, air conditioning, and refrigeration equipment. It also carries SWD (Switching Duty) and HID (High-Intensity Discharge) ratings, making it suitable for switching 120V or 277V fluorescent and HID lighting loads.
Can the HGG3B020L be reverse fed?
Yes. Because this breaker features a non-removable thermal-magnetic trip unit, it is suitable for reverse feed applications according to UL 489 standards.
What wire sizes and materials are supported by the lugs on this breaker?
The included line and load lugs accept 14-6 AWG copper (Cu) wire or 12-6 AWG aluminum (Al) wire.
What does the "LI" trip function code indicate on this breaker?
The "LI" designation means this thermal-magnetic breaker provides Long-Time (L) protection for standard overloads and Instantaneous (I) protection for short circuits. Both the thermal and magnetic trip points are fixed.
How does the HGG frame differ from the NGG and LGG frames?
The HGG frame is the high-interrupting capacity version within the Siemens GB/GG frame family, offering a 35kAIC rating at 480VAC. It shares the same physical footprint as the standard NGG frame (25kAIC) and the extra-high capacity LGG frame (65kAIC).
Can the HGG3B020L be used to replace an LGG3B020L or NGG3B020L?
Yes, because they share the same physical dimensions and mounting, the HGG3B020L can replace an NGG3B020L to provide a higher interrupting rating. It can also substitute for an LGG3B020L, provided the system's available fault current does not exceed the HGG's 35kAIC rating at 480V.
How is the HGG3B020L mounted inside an enclosure?
This is a unit-mount, feed-thru breaker that installs using screws or standard DIN rail mounting, rather than plugging or bolting directly onto a panelboard bus.
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