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Siemens HGG2B040L Molded Case Circuit Breaker
- 40A
- 2 Pole
- Unit Mount
Siemens
HGG2B040L
Molded Case Circuit Breaker
Brand
Siemens
SKU
HGG2B040L
Quantity
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Siemens HGG2B040L - 40A 2 Pole Molded Case Circuit Breaker
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Description
Built for demanding commercial and industrial environments, the Siemens HGG2B040L is a 2-pole, 40A unit mount MCCB from the Sentron GB/GG frame series. It delivers reliable long-time and instantaneous (LI) protection for branch circuits. The breaker is fully compatible with Siemens P1, P2, and P3 panelboards. Featuring a 65kAIC rating at 240V, it replaces older LGG2B040L breakers and is replaced by the 3VA51 series (which requires a retrofit kit for panelboards).Specifications
| Brand | Siemens |
|---|---|
| Series | HGG |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 30kA @ 250VDC |
| Frame Type | HGG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Enclosures |
| Wire Gauge | 8-1/0 AWG (Cu), 8-2/0 AWG (Al) |
| Max Wire | 1/0 AWG (Cu) / 2/0 AWG (Al) |
| Min Wire | 8 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, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, HACR, HID, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Trip-Free Mechanism, Non-Interchangeable Trip, HID Rated |
Product FAQs
8 answersWhat types of panels or enclosures accept the HGG2B040L breaker?
This unit mount breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as Siemens switchboards and standalone enclosures. Because it is a feed-thru style breaker, it secures via screws or DIN rail rather than plugging directly into a busbar.
Can I mount the HGG2B040L on a DIN rail?
Yes. This unit mount breaker supports both standard screw mounting and DIN rail mounting. This makes it versatile for industrial control panels, automation cabinets, and standalone enclosures.
What does a feed-thru connection type mean for this breaker?
A feed-thru connection means the breaker has lugs on both the line and load sides. It does not plug directly into a panelboard busbar, so wire conductors must be terminated at both ends of the breaker.
What does the LI trip function mean on this breaker?
The LI designation indicates that the thermal magnetic trip unit provides Long-Time (L) and Instantaneous (I) protection. Long-Time protects against sustained overloads, while Instantaneous protects against sudden short circuits. Both settings are fixed on this specific model.
Does this breaker provide adjustable trip settings?
No, the HGG2B040L features a fixed thermal and fixed magnetic trip unit. Neither the long-time overload nor the instantaneous short-circuit thresholds can be adjusted in the field.
Is the HGG2B040L suitable for use with aluminum wiring?
Yes, the factory installed lugs accept both copper (Cu) and aluminum (Al) conductors. The accepted wire range is 8 to 1/0 AWG for copper and 8 to 2/0 AWG for aluminum.
Can this breaker be used in DC voltage applications?
Yes, the HGG2B040L is rated for both AC and DC voltage systems. It carries a maximum DC rating of 250VDC with an interrupting capacity of 30kA.
What frame family does the HGG2B040L belong to?
This breaker is part of the Siemens SENTRON family and belongs to the GB/GG frame group. It specifically uses the HGG frame type, which dictates its physical dimensions and mounting footprint.
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