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Square D QOB220VH two-pole bolt-on breaker, grey plastic body, paddle actuator, pressure-plate terminals

SQUARE D

SQUARE D QOB220VH 20A 2 Pole 120/240V Circuit Breaker

SKU CH-CDTQ-JJ4PZ

A 20 A, two-pole miniature breaker with 22 kA interrupting capacity for Square D QO bolt-on panels

  • High-interrupting 22 kA rating protects against severe fault currents
  • 20 A, 2-pole design handles 120/240 V AC circuits
  • Bolt-on mounting fits Square D QO and NQOD panelboards
  • Pressure-plate terminals provide secure wire connections without special tools
  • Compact 3 in × 1.5 in × 2.9 in frame saves panel space

What this breaker is and who needs it

The SQUARE D QOB220VH is a 20 A, two-pole miniature circuit breaker rated for 120/240 V AC single-phase service. It fits QO-series panelboards and NQOD load centres using a bolt-on mounting style with a paddle actuator. Electricians and facility managers specify it when a standard branch circuit requires high interrupting capacity in a compact 100 A frame.

Behaviour under sustained load

The breaker carries its 20 A rating continuously in the listed enclosure without nuisance tripping. Its high interrupting capacity of 22 kA at 120/240 V AC ensures safe fault clearing even when available short-circuit current is high. The pressure-plate terminals maintain a secure connection through thermal cycling, so resistance stays stable during long periods of full-load operation.

The spec that decides fit

The decisive figure is the 22 kA interrupting rating at 120/240 V AC; if the panelboard’s available fault current exceeds that value this breaker cannot be applied. The bolt-on mounting and QO-series compatibility are also mandatory — panels that accept only plug-on or other series breakers will not accept this unit.

Highlights

  • High-interrupting 22 kA rating protects against severe fault currents
  • 20 A, 2-pole design handles 120/240 V AC circuits
  • Bolt-on mounting fits Square D QO and NQOD panelboards
  • Pressure-plate terminals provide secure wire connections without special tools
  • Compact 3 in × 1.5 in × 2.9 in frame saves panel space

Specifications

BrandSQUARE D

Questions about this item

How much heat does the 20 A QOB220VH produce when it runs continuously in a QO load centre?

The breaker is rated 20 A at 120/240 V AC with a 22 kA interrupting capacity; its bolt-on pressure-plate terminals and paddle actuator are designed for normal temperature rise within UL limits for the 100 A frame.

What panelboard must I already have for this bolt-on two-pole breaker to install?

It fits Square D NQOD panelboards and any QO-series load centre that accepts QOB bolt-on breakers.

Will the 1.5 in wide QOB220VH sit beside older QO single-pole breakers without spacing issues?

Yes — the 1.5 in width matches the standard QO pole spacing, so it aligns with existing QO single-pole units in the same panel.

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