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SIEMENS SIEQ21550CT SIE Q21550CT MLD-CS Plug-in CB, Black

Free shipping on orders over $29.99

$38.00

$ 16 .99 $16.99

In Stock

About this item

  • SIEQ21550CT SIE Q21550CT; MLD-CS PLUG-IN CB


Product Description

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. Check wiring diagram to confirm. To ensure the warranty on a Siemens panel is not voided, the use of Siemens breakers is required. The triplex breakers provide two single pole and one double pole breakers in half the space. These triplex, 1/2-Inch frame breakers are ideal when new circuits are required in a panel that has no available spaces. Siemens strongly recommends against the use of "used" breakers. The installation of used breakers in a Siemens panel will void the warranty on the panel. Siemens does not sell used breakers and has not approved any 3rd party sellers to do so.

From the Manufacturer

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. Check wiring diagram to confirm. To ensure the warranty on a SIEMENS panel is not voided, the use of SIEMENS breakers is required. The triplex breakers provide two single pole and one double pole breakers in half the space. These triplex, 1/2-Inch frame breakers are ideal when new circuits are required in a panel that has no available spaces.


Rob
2025-09-05 12:56:22
Exact item as ordered received quickly.
Austin
2025-08-31 14:15:20
Exactly what I expected
beraud francois
2025-08-27 15:46:51
ok, i feel that i need to add that this breaker is fine. Some panels have restricting bar to avoid adding to many breakers. Quad breakers will not fit then, do not modify the back of them. This breaker is perfectly fine and is a Siemens brand .Licenced Electrical contractor for 25 years.
Christian P.
2025-08-25 18:01:44
N/a
Ken
2025-08-13 18:16:20
worked as it should
L & C
2025-08-12 17:32:36
The Siemens breaker was exactly as described and arrived promptly. It was priced competitively, making it a great value for a quality product. The installation process was straightforward, and the breaker has been functioning flawlessly ever since.
Douglas K Daley
2025-08-02 16:52:15
The one I received did not work. Returned for credit.
Lori
2025-07-15 15:59:12
Great
Darren
2025-07-09 13:46:32
Good price and saved me trying to hunt one down at a local hardware store. Got it for the 50amp rating needed for a surge protector, and still get 2 other breakers I can use.
Rob
2025-06-07 16:05:55
Exact item as ordered received quickly.
Austin
2025-05-30 13:24:09
Exactly what I expected
beraud francois
2025-05-21 13:01:18
ok, i feel that i need to add that this breaker is fine. Some panels have restricting bar to avoid adding to many breakers. Quad breakers will not fit then, do not modify the back of them. This breaker is perfectly fine and is a Siemens brand .Licenced Electrical contractor for 25 years.
Christian P.
2025-05-05 17:27:07
N/a
Ken
2025-05-01 16:22:13
worked as it should
L & C
2025-04-29 10:45:55
The Siemens breaker was exactly as described and arrived promptly. It was priced competitively, making it a great value for a quality product. The installation process was straightforward, and the breaker has been functioning flawlessly ever since.
Douglas K Daley
2025-04-17 13:37:03
The one I received did not work. Returned for credit.
Lori
2025-03-30 18:21:34
Great
Darren
2025-03-04 16:17:01
Good price and saved me trying to hunt one down at a local hardware store. Got it for the 50amp rating needed for a surge protector, and still get 2 other breakers I can use.
Ohno
2025-02-23 21:53:34
Good quality. Just broken isolator tabs when shipped. Sent back for credit. Would have bought another. Had not in stock for that price
Bernard
2025-02-20 13:49:52
J’ai acheté ce disjoncteur 50A afin d’y ajouter une prise pour ma nouvelle soudeuse MMA. Ce modèle n’est pas tout à fait compatible avec mon panneau Siemens 125A. Avec une légère modification, il s’est adapté à mon panneau. Tout fonctionnent bien maintenant.
istvan
2025-02-13 12:44:35
Do not waste your money for this product, it is looks like a genuine simmens breaker but when I installed it it won’t fit properly, the contact blade is much smaller and thinner and shorter than the original.Very unstable and unsafe to use it.I am a certified electrician by trade. I never seen this in my professional life.It is useless and hoping I will get my money back.By do way I just purchased because of the shortage in the supplier, I never got any from Amazon and I never will.
Julia
2025-01-26 17:47:36
Not sure what the previous commenter was talking about. Took a chance and ordered this breaker . It arrived today and looks to be of good quality. Has all the necessary CSA stickers. Seems legit.
Ohno
2025-01-19 10:01:42
Good quality. Just broken isolator tabs when shipped. Sent back for credit. Would have bought another. Had not in stock for that price
Bernard
2024-12-13 16:14:08
J’ai acheté ce disjoncteur 50A afin d’y ajouter une prise pour ma nouvelle soudeuse MMA. Ce modèle n’est pas tout à fait compatible avec mon panneau Siemens 125A. Avec une légère modification, il s’est adapté à mon panneau. Tout fonctionnent bien maintenant.
istvan
2024-12-07 17:27:27
Do not waste your money for this product, it is looks like a genuine simmens breaker but when I installed it it won’t fit properly, the contact blade is much smaller and thinner and shorter than the original.Very unstable and unsafe to use it.I am a certified electrician by trade. I never seen this in my professional life.It is useless and hoping I will get my money back.By do way I just purchased because of the shortage in the supplier, I never got any from Amazon and I never will.
Julia
2024-12-02 10:27:12
Not sure what the previous commenter was talking about. Took a chance and ordered this breaker . It arrived today and looks to be of good quality. Has all the necessary CSA stickers. Seems legit.
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