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Square D QO130 single-pole breaker, grey plastic body, black paddle actuator, plug-in mount

SQUARE D

SQUARE D QO130 Circuit Breaker 30A 1 Pole 120/240V AC

SKU CH-JT9T-J3XV2

Protects single-phase 120/240 V AC circuits up to 30 A with a 10 kA interrupting rating in a plug-in QO frame

  • 30 A single-pole protection for 120/240 V AC circuits
  • 10 kA interrupting rating handles high fault currents
  • Plug-in mounting fits QO load centres and NQ panelboards
  • Pressure-plate terminals accept wire without special tools
  • Compact 3 in by .8 in frame saves panel space

30 A single-pole QO breaker

This SQUARE D QO130 is a miniature circuit breaker rated at 30 A for 120/240 V AC single-phase circuits. It mounts by plugging directly into QO-series load centres and NQ panelboards. The paddle actuator gives clear on-off indication. It suits residential and light-commercial branch circuits that require standard protection.

10 kA interrupting rating at 120/240 V AC

The breaker carries a maximum AIR rating of 10 kA at 120/240 V AC, limiting let-through energy during a fault. Pressure-plate terminals accept solid or stranded conductors without special tools. At 48 V DC it provides the same single-pole protection. Normal operation adds negligible heat to the panel interior.

Fits 100 A frame QO load centres

The device shares the 100 A frame size of the QO range, measuring 3 in long, .8 in wide and 2.9 in deep. It is not designed for panels outside the QO or NQ series. Installers needing multi-pole or higher-amperage protection should select a different QO model. Sustained loads at 30 A remain within the breaker’s continuous rating.

How it compares

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Price $11.99
Cheaper than about 91% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameSQUARE D

Questions about this item

How do I install the QO130 breaker into a QO load center, and what step is often missed?

Align the plug-in base with the panel bus, press firmly until it seats fully, then verify the paddle actuator moves freely; the step often missed is confirming the pressure-plate terminals are tightened on the circuit conductors.

What maintenance or replacement will the QO130 need over its service life?

The breaker itself requires no scheduled maintenance; replace it only if it trips repeatedly without overload, shows physical damage, or fails to reset after a verified fault condition.

What is the first limit the QO130 reaches under sustained heavy load?

The 30 A thermal trip curve opens the circuit when current exceeds the rated value continuously; the 10 kA interrupting rating at 120/240 V AC is the short-circuit limit, not a sustained-load limit.

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