Siemens
Siemens 5SX21-C10 10A Miniature Circuit Breaker
Siemens 5SX21-C10 10A Miniature Circuit Breaker
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12-Mo Warranty
Same-Day Dispatch
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🎖 Veteran-Owned
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12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
10A rating
Single pole
C-curve tripping
DIN rail mounting
Thermal-magnetic protection
6kA interrupting capacity
Product description
The Siemens 5SX21-C10 is a single-pole miniature circuit breaker featuring a 10 Amp rating and a C-curve tripping characteristic. It is designed to provide dependable protection against overloads and short circuits.
This breaker is widely used in electrical distribution systems for residential, commercial, and industrial applications, particularly for circuits requiring a C-curve to handle moderate inrush currents, such as lighting or small motor loads.
Stanlo Automation, a veteran-owned supplier, offers the Siemens 5SX21-C10, ensuring you receive quality components with prompt service and delivery.
Technical specifications
| Amperage | 10A |
| Poles | 1 |
| Voltage | 230/400V AC |
| Tripping Characteristic | C |
| Interrupting Rating | 6kA |
Common applications
Lighting circuits
Outlet circuits
Control circuits
Small motor loads
Distribution panels
Compatible systems
Standard 35mm DIN rail systems.
Also known as
Siemens 5SX21 C10, Siemens 10A C-Curve Breaker
Replaces / compatible with
The 5SX21-C10 serves as a direct replacement for other Siemens 5SX21 series breakers with identical specifications. It is also a suitable substitute for comparable 10A, C-curve, single-pole breakers from other reputable manufacturers.
Technical note
Expert tip
Always ensure the circuit breaker's amp rating is appropriately sized for the connected load and wire gauge.What happens next?
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Frequently asked questions
What type of loads is the Siemens 5SX21-C10 circuit breaker best suited for?
The Siemens 5SX21-C10 circuit breaker, with its C-curve, is best suited for loads that may experience moderate inrush currents, such as lighting circuits, general-purpose outlets, and small inductive loads like fractional horsepower motors. It provides reliable protection without nuisance tripping.