Siemens BA120AFCHH AFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Quantity
Siemens BA120AFCHH - 20A AFCI Miniature Circuit Breaker
New
Quantity
Description
Rated for 65kAIC at 120V, this single-pole 20-amp combination AFCI delivers robust arc-fault mitigation for demanding commercial and industrial facilities. The bolt-on design installs securely into Siemens P1, P2, and P3 panelboards, serving as a reliable replacement for the older BA120AFHH model. It includes an LED trip indicator for rapid troubleshooting and a pigtail neutral connection.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BA120AFCHH |
| Series | BA |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC |
| Frame Type | BA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | CSA C22.2 No. 5, HACR, SWD, UL 1699, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Combination Type AFCI, High Interrupting Capacity, LED Trip Indicator, HACR Rated, SWD Rated |
Product FAQs
6 answersWhich panelboards are compatible with the BA120AFCHH circuit breaker?
This bolt-on breaker is designed specifically for use in Siemens P1, P2, and P3 panelboards. It is not compatible with standard residential load centers that require plug-in connections.
What type of arc fault protection does this breaker provide?
It is a Combination Type Arc Fault Circuit Interrupter (CAFCI). This means it detects and mitigates both high-energy parallel arcs and low-energy series arcing faults to meet National Electrical Code (NEC) requirements.
How is the neutral connection wired on this breaker?
This model features a pigtail neutral connection. The coiled white wire must be connected directly to the panelboard neutral bus bar to ensure the arc fault detection circuitry functions correctly.
Does the BA120AFCHH replace any older Siemens breaker models?
Yes, this combination AFCI breaker serves as a direct replacement for the older BA120AFHH model, offering the same 65kAIC interrupting capacity and bolt-on mounting.
What does the 65kAIC rating indicate for this breaker?
The 65kAIC rating means the breaker can safely interrupt up to 65,000 amps of fault current at 120V without sustaining damage. This high interrupting capacity is typically required in commercial or industrial facilities with higher available fault currents.
How does the thermal magnetic trip mechanism operate on this AFCI breaker?
The thermal magnetic trip unit provides standard overcurrent protection. The thermal component offers a long-time delay for gradual overloads, while the magnetic component provides instantaneous tripping for severe short circuits, working alongside the electronic arc fault detection.
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