We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Siemens BQH single-pole bolt-on breaker, 20A 120V, grey toggle and lug terminals

SIEMENS

SIEMENS BQH 20A 1 Pole 120V AC Bolt On 22kA

SKU CH-B992-9PZPC

A 20 A single-pole bolt-on breaker rated 120 V AC with a 22 kA interrupting capacity for Siemens panelboards

  • High interrupting capacity protects circuits up to 22kA at 120V AC
  • Bolt-on mounting installs quickly in compatible Siemens panelboards
  • Single-pole design handles 20A loads on 120V AC systems
  • Lug terminals accept copper wire from 14 to 10 AWG
  • UL Listed certification confirms compliance with safety standards

Circuit breaker for 120 V panels

The SIEMENS BQH 20 A single-pole breaker fits bolt-on panelboards and carries a 22 kA interrupting rating at 120 V AC. It is built for residential and light-commercial circuits that require high short-circuit protection. Electricians and facility managers specify it when a standard 10 kA device is insufficient.

Bolt-on mounting with lug terminals

The breaker snaps onto the panel rail and secures with a bolt for a firm mechanical connection. Terminal lugs accept copper wire from 14 AWG to 10 AWG and aluminium wire from 12 AWG to 10 AWG. A common error is inserting wire larger than 10 AWG or skipping the bolt, which can cause overheating.

22 kA interrupting capacity at 120 V AC

This rating determines whether the breaker can safely clear a fault on the available system current. Panels with higher prospective fault current need a different device. Buyers who need a higher AIC value or a two-pole configuration cannot use this model.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $98.99
Pricier than about 68% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSIEMENS

Questions about this item

How do I verify the BQH breaker trips correctly after wiring it to a 120V AC circuit?

After installation, switch the toggle to ON; the breaker should hold a 20 A load without nuisance tripping and must interrupt a fault up to 22 kA at 120V AC as confirmed by its UL listing.

What accessories come with the BQH unit and what must be purchased separately?

The breaker ships as a single bolt-on unit with integrated lug terminals for 14–10 AWG copper or 12–10 AWG aluminum wire; no mounting hardware, panelboard connectors or wire are included.

Which BQH version should I select for a single-phase 120V AC panelboard?

Choose the 1-pole, 20 A, 120V AC BQH model rated 22 kA AIR with bolt-on mounting and a 125 A frame size to match Siemens panelboard requirements.

More in Breakers & Circuit Protection

Similar items