Product Description

Siemens SENTRON Miniature Circuit Breaker 50A, 3-Pole, C Curve, 10kA – 5SL4350-7RCZ16

Product Description

The Siemens 5SL4350-7RCZ16 is a SENTRON Miniature Circuit Breaker (MCB) designed to provide reliable overload and short-circuit protection in AC electrical distribution systems. It features a 50 A rated current, 3-pole configuration, C tripping characteristic, and 10 kA breaking capacity, making it suitable for three-phase industrial, commercial, and infrastructure applications. Siemens specifications confirm the corresponding 5SL4350-7RC model with these ratings.

The MCB operates at 415 V AC, 50/60 Hz, with a maximum multi-phase operating voltage of 440 V AC. It provides energy limitation Class 3 and IP20 protection with connected conductors. The typical mechanical service life is 10,000 operating cycles.

Key Features

• Brand: Siemens
• Series: SENTRON 5SL
• Product Type: Miniature Circuit Breaker (MCB)
• Model: 5SL4350-7RCZ16
• Rated Current: 50 A
• Number of Poles: 3-Pole (3P)
• Tripping Characteristic: C Curve
• Breaking Capacity: 10 kA
• Rated Supply Voltage: 415 V AC
• Frequency: 50/60 Hz
• Maximum Multi-Phase Operating Voltage: 440 V AC
• Energy Limiting Class: 3
• Protection: Overload and short-circuit protection
• Protection Rating: IP20 with connected conductors
• Mechanical Service Life: Typically 10,000 operating cycles

Applications

• Three-phase distribution panels
• Industrial control panels
• Commercial electrical installations
• Machinery and OEM panels
• Building distribution boards
• HVAC systems
• Industrial automation systems
• AC power distribution
• General circuit protection

Benefits

• Reliable overload and short-circuit protection
• High 10 kA breaking capacity
• 3-pole design for three-phase circuits
• C-curve characteristic for moderate inrush-current loads
• Compact modular construction
• Suitable for industrial and commercial distribution systems
• Reliable Siemens SENTRON performance
• Long mechanical service life

FAQs

Q1. What is Siemens 5SL4350-7RCZ16?

It is a Siemens SENTRON 5SL Miniature Circuit Breaker rated at 50 A, with 3 poles, C-curve tripping characteristic, and 10 kA breaking capacity.

Q2. What is the rated current of this MCB?

The rated current is 50 A at 30°C. Siemens specifies reduced operational current at higher ambient temperatures, including 47.36 A at 40°C and 43.09 A at 55°C.

Q3. What does C Curve mean?

A C-curve MCB is generally suitable for circuits where connected equipment can produce moderate starting or inrush currents, including various motors, transformers and industrial loads.

Q4. What is the breaking capacity?

The 5SL4350-7RC has a 10 kA breaking capacity according to EN 60898. The Siemens datasheet also lists 10 kA according to IEC 60947-2.

Q5. Where can the 50A 3-pole MCB be used?

The 5SL4350-7RCZ16 is suitable for three-phase distribution boards, industrial control panels, machinery, commercial installations, HVAC systems and AC power distribution circuits where a 50 A, 3-pole C-curve MCB is appropriate.