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Square D™ QO370 Miniature Circuit Breaker, 240 VAC, 70 A, 10 kA, 3 Poles, Thermal Magnetic Trip

Selected Square D™ QO370 Miniature Circuit Breaker, 240 VAC, 70 A, 10 kA, 3 Poles, Thermal Magnetic Trip
Square D™ QO370 Miniature Circuit Breaker, 240 VAC, 70 A, 10 kA, 3 Poles, Thermal Magnetic Trip

Short Description

Standard thermal-magnetic QO and Homeline 15 and 20 A circuit breakers are listed to UL489 and provide overload and short circuit protection for conductors. The QO and Homeline thermal-magnetic circuit breakers are for general use in protecting branch circuit in residential and commercial applications. Use QO and Homeline 15 and 20 A arc fault circuit interrupter circuit breakers that have been listed to UL1699 in order to provide arc fault circuit protection for the entire branch circuit in accordance with the installation requirements in National Electrical Code section 210.12. Thermal-magnetic circuit breakers are not designed, listed, or intended to provide protection against low level hazardous arcing conditions in branch circuit wiring.

Features

  • QO and QOB circuit breakers have an overcenter, trip-free toggle mechanism with quick-make, quickbreak action and positive handle indication
  • The tripping mechanisms in two-and three-pole circuit breakers operate such that an overcurrent on any pole of the circuit breaker will cause all poles of the circuit breaker to open simultaneously
  • Plug-on QO circuit breakers are for use in QO load centers, NQ and NQOD panelboards, OEM mounting bases, and Speed D™ switchboard distribution panels
  • QO and QOB circuit breakers have VISI-TRIP feature, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit
  • 8 - 2 AWG copper/aluminum
  • Common trip
  • Standard

Specification

Frame
QO Series
Frequency Rating
50/60 Hz
Interrupt Rating
10 kA
Mounting Type
Plug-On
Number Of Poles
3
Phase
3-Phase
Temperature Rating
40 deg C
Trip Type
Thermal Magnetic
Voltage Rating
240 VAC
Wire Size
8 to 2 AWG
Application
For providing overload and short circuit protection
Amperage Rating
70 A
Connection Type
Box Lug
Dimensions
3 in H x 2.25 in W x 2.91 in D
Standard & Approvals
CSA Certified, HACR Rated, RoHS Complaint, UL Listed

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