Siemens SENTRON Miniature Circuit Breaker 40A, 1-Pole, C Curve, 10kA – 5SL4140-7RCZ48

Product Description

The Siemens 5SL4140-7RCZ48 is a SENTRON 5SL Miniature Circuit Breaker (MCB) designed for reliable overload and short-circuit protection in electrical installations. It features a 40 A rated current, 1-pole configuration, C tripping characteristic, and 10 kA breaking capacity. The corresponding Siemens 5SL4140-7RC model is specified for 240/415 V applications.

The MCB is suitable for residential, commercial and industrial distribution boards, control panels, lighting circuits, socket circuits, HVAC systems and other AC loads where a C-curve 40 A circuit breaker is required. Its compact design supports DIN-rail installation and provides dependable circuit protection.

Key Features

• Brand: Siemens
• Series: SENTRON 5SL
• Model: 5SL4140-7RCZ48
• Product Type: Miniature Circuit Breaker (MCB)
• Rated Current: 40 A
• Number of Poles: 1 Pole (1P)
• Tripping Characteristic: C Curve
• Breaking Capacity: 10 kA
• Rated Voltage: 240/415 V AC
• Frequency: 50/60 Hz
• Energy Limiting Class: Class 3
• Mounting: DIN Rail
• Protection: Overload and short-circuit protection
• Typical Mechanical Life: 10,000 operating cycles
• Protection Rating: IP20 with connected conductors

Applications

• Electrical distribution boards
• Industrial control panels
• Commercial installations
• Lighting circuits
• Socket outlet circuits
• HVAC systems
• Machinery panels
• Building electrical systems
• General AC circuit protection

Benefits

• Reliable overload and short-circuit protection
• High 10 kA breaking capacity
• Compact 1-pole configuration
• C-curve characteristic for moderate inrush-current loads
• Easy DIN-rail installation
• Suitable for 240/415 V AC distribution systems
• Reliable Siemens SENTRON performance

FAQs

Q1. What is Siemens 5SL4140-7RCZ48?

It is a Siemens SENTRON Miniature Circuit Breaker rated at 40 A, with 1 pole, C-curve tripping characteristic and 10 kA breaking capacity.

Q2. What is the rated current?

The MCB has a rated current of 40 A at 30°C. Siemens specifies lower operational current values at higher ambient temperatures.

Q3. What does C Curve mean?

A C-curve MCB is generally suitable for circuits where equipment may produce moderate starting or inrush currents, such as certain motors, HVAC equipment and other industrial/commercial loads.

Q4. What is the breaking capacity?

The MCB provides a 10 kA breaking capacity according to the applicable EN 60898 and IEC 60947-2 specifications.

Q5. Where can I buy Siemens 5SL4140-7RCZ48?

The Siemens 5SL series MCB range is available through SB Smart, including genuine Siemens circuit protection products with GST billing and delivery across India.