This assembly consists of a Siemens 5SY41 C1 miniature circuit breaker (MCB) combined with a Siemens 5ST3010 AS auxiliary contact module, a configuration commonly used in electrical control panels for circuit protection and status signaling.

The miniature circuit breaker protects the circuit against overloads and short circuits, while the auxiliary contact module allows external systems—such as PLCs, relays, monitoring systems, or signal lamps—to detect the breaker’s operational status (ON/OFF or tripped).

With a rated current of 1A and C tripping curve, this device is particularly suitable for protecting control circuits, instrumentation, industrial automation systems, and command panels.

The side-mounted auxiliary module provides normally open (NO) and normally closed (NC) contacts for signaling and automation functions.

⚙️ Technical Specifications

🔹 Miniature Circuit Breaker

Brand: Siemens
Model: 5SY41
Rated current: 1 A
Tripping curve: C
Number of poles: 1P
Rated voltage: 230 / 400 V AC
Breaking capacity: 10 kA

Standards:

• IEC / EN 60898

• IEC / EN 60947-2

🔹 Auxiliary Contact Module

Brand: Siemens
Model: 5ST3010 AS
Type: Auxiliary signaling contact
Contact configuration: 1 NO + 1 NC
Maximum voltage: 440 V
Rated contact current: up to 6 A

🛠 Installation

• Mounting on 35 mm DIN rail

• Direct side connection between circuit breaker and auxiliary module

• Compatible with Siemens modular electrical panels

🏭 Applications

Ideal for:

✔ Industrial automation panels
✔ Control circuits
✔ Breaker status signaling systems
✔ PLC systems
✔ Monitoring and supervisory systems
✔ Industrial electrical installations