QOU220 Circuit Breaker

Product Details
Manufacturer:Square D
Voltage:120 VAC 240 VAC 48 VDC

Purchase Options

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Additional Product Details
kAIC Ratings:10 KAIC at 120 VAC
10 KAIC at 240 VAC
5 KAIC at 48 VDC
Lug Kits:3 standard wire connections on load side
Din-rail mountable or use the metal clips for surface mount
Mounting Hardware:Din-rail mounting connection

Dimensions:1.50 w x 4 h x 2.25
Common Accessories:add 1021 to end of part for Shunt Trip = QOU2201021 factory-installed option only
add 1200 or 1201 to end of part for auxillary switch factory-installed option only = QOU2201200 or QOU2201201
add 2100 to the end of part for alarm switch = QOU2202100
Catalogue Data Sheet:   Click to download or view PDF

Product Description

Thermal magnetic circuit breakers, like the QOU220 are commonly found HVAC applications and other set-ups with DinRail mounting applications. This is considered a feed-through breaker. It can be mounted either to a DinRail set up or to a flat panel surface. The electromagnet characteristics of the QOU220 allow it to trip instantaneously under large surges in current (e.g., short circuits). A bimetallic strip within the QOU220 will respond to less extreme but longer-term over-current conditions. These breakers are found light industrial and in some residential applications across the United States. The QOU220 breakers are used to protect lighting circuits, dishwashers, dryers, and lots of residential equipment.

The QOU220 can be purchased from www.LiveWireSupply.com. Itís always best to consult local utility requirements and code prior to installing this breaker.

Square D Molded Case Circuit Breakers, like the QOU220 are designed to provide circuit protection for low voltage distribution protection for low voltage distribution systems. They are described by NEMA as, "a device for closing and interrupting a circuit between separable contacts under both normal and abnormal conditions," and furthermore as, ". . . a breaker assembled as an integral unit in a supporting and enclosing housing of insulating material." The NEC describes them as, "A device designed to open and close a circuit by non-automatic means, and to open the circuit automatically on a predetermined overload of current, without injury to itself when properly applied within its rating."

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