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Siemens CQD170 Molded Case Circuit Breaker

  • 70A
  • 1 Pole
  • DIN Rail
Siemens CQD170
Molded Case Circuit Breaker
Brand Siemens
SKU CQD170
Select Item Condition
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  • 70A
  • 1 Pole
  • DIN Rail

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Siemens CQD170 - 70A 1 Pole Molded Case Circuit Breaker

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$173.71 In Stock

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Description

Belonging to the Siemens Sentron family, the CQD170 is a 1-pole, 70A molded case circuit breaker engineered for commercial and industrial applications. It provides reliable thermal-magnetic overcurrent protection for branch circuits and equipment. This 1-inch wide breaker mounts onto standard DIN rails, making it an excellent choice for OEM panels and control enclosures. It features cable-in/cable-out lug connections. Rated at 14kAIC at 277VAC, this unit is HACR and reverse feed rated.

Specifications

Key specifications
Brand Siemens
Series CQD
Amperage 70A
Poles 1
Mounting Style DIN Rail
Voltage 120VAC, 240VAC, 277VAC, 125VDC
Phase 1
AIC Rating 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 277VAC, 14kA @ 125VDC
Fit and installation
Terminal Type Lugs
For Use With DIN Rail Enclosures, OEM Panels
Wire Gauge 8-1 AWG (Cu), 6-1/0 AWG (Al)
Max Wire 1 AWG (Cu), 1/0 AWG (Al)
Min Wire 8 AWG (Cu), 6 AWG (Al)
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch
Accessories Line and Load Lugs Included
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C

Product FAQs

6 answers
What is the difference between Siemens CQD and BQD circuit breakers?

Both belong to the same Sentron frame group and share identical electrical characteristics, but the CQD170 is designed specifically for DIN rail mounting. BQD breakers are typically panelboard mounted or base mounted.

What type of mounting rail is required for the CQD170?

This breaker mounts directly onto a standard 35mm DIN rail. It is designed for feed-thru connections in OEM panels and industrial control enclosures without requiring a specialized panelboard bus.

Is the Siemens CQD170 suitable for direct current (DC) applications?

Yes, this breaker is rated for DC systems up to 125VDC, providing an interrupting capacity of 14kAIC at that voltage.

What wire sizes are compatible with the lugs on this 70A breaker?

The factory lugs accept 8 to 1 AWG copper wire or 6 to 1/0 AWG aluminum wire. Ensure adequate wire bending space in your DIN rail enclosure when routing maximum gauge conductors.

How does the interrupting rating scale across different voltage systems?

The breaker provides a high interrupting rating of 65kAIC on 120VAC or 240VAC systems. When applied at its maximum 277VAC rating, the interrupting capacity drops to 14kAIC.

Does the CQD170 provide ground fault or arc fault protection?

No, this is a standard thermal magnetic breaker featuring fixed long-time and instantaneous trip functions. It provides standard overload and short circuit protection but does not include equipment ground fault or arc fault circuitry.

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Reviews

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Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
1 review
  • LS
    Luis S.
    Flag of United States
    Reviewing
    Siemens CQD350 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    10/29/17
    Excellent service

    Ill recommend super breakers

    Forever...

    Good prices and fast delivery..