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Siemens Q21540CT 40 Amp Circuit Breaker Review

3

·

Very good

Revainrating 4 out of 5  
Rating 
4.0
👷‍♀️ Circuit Protection Products, 💡 Industrial Electrical

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Description of Siemens Q21540CT 40 Amp Circuit Breaker

Siemens space saving, plug in circuit breakers are intended for use in Siemens EQ, Siemens Ultimate, ITE, and Gould load centers and meter combinations that are rated to accept type QT breakers. For Canadian applications Non-CTL version, use Siemens catalog number with “NC” suffix. Check panel wiring diagram to confirm. Triplex 1/2 in. frame. Triplex circuit breaker features one 40 Amp double pole and two 15 Amp single pole circuit breakers. Requires 2-panel spaces. 10k AIC series rating. HACR rated. CSA Certified. UL Listed. Designed for residential/commercial applications.

Reviews

Global ratings 3
  • 5
    1
  • 4
    1
  • 3
    1
  • 2
    0
  • 1
    0

Type of review

Revainrating 4 out of 5

Excellent circuit breaker for industrial electrical needs

This circuit breaker has been the perfect solution for our industrial electrical projects. According to my experience, it is easy to install and very reliable. I particularly appreciate its ability to handle high amps and its ability to trip quickly when necessary. The design is also sleek and doesn't take up unnecessary space. The only downside is its price point, but in the long run, it's worth the investment.

Pros
  • Easy to install, reliable, handles high amps well, quick tripping ability, sleek design
Cons
  • Price point can be high.

Revainrating 5 out of 5

Incredibly fast delivery

I ordered yesterday (Saturday) during this pandemic crisis and I have Prime so it should have been delivered on Monday. To my surprise, it was delivered in less than 24 hours on Sunday. The product is exactly what I ordered and works great.

Pros
  • For Canadian use of the non-CTL version, use the Siemens part number with the suffix "NC". Check the panel wiring diagram to confirm.
Cons
  • weak

Revainrating 3 out of 5

The pin slots will not fit the old Siemens panel, you will need the Q21540CTNC if the pins are too big.

Doesn't fit old Siemens panels here in the States as I've read from some Canadian customers. A previous review shows pictures of cutouts for different knife sizes. Unfortunately, that's exactly my dilemma with this switch. Too bad too because that's exactly what I need, keep two 15 amp circuits and add a 2 pole 40 amp circuit. The cable is routed, there is no breaker to make sparks and punches. 3 stars for the idea. To update. For everyone who, after some research, is in the same boat, you need

Pros
  • Needs room for 2 panels
Cons
  • Not trendy