The Siemens 5SL4204-7RC is a precision-engineered SENTRON 5SL4 series Miniature Circuit Breaker (MCB) designed for high-reliability overload and short-circuit protection in residential, commercial, and industrial automation environments. Featuring a 2-pole configuration, 4A rated current, Type C tripping characteristics, and a 10kA breaking capacity at 415V AC, this MCB provides fine-tuned protection for delicate control circuits, low-power transformers, and instrument loops.
10kA Short-Circuit Breaking Capacity: Complies with IEC 60898-1 and IEC 60947-2 standards, ensuring safe interruption of high fault currents up to 10kA at 415V AC.
4A Low-Ampere Rating: Precision protection for fine-gauge control wiring, auxiliary power lines, and low-power inductive loads.
Type C Tripping Curve: Trips instantaneously at 5 to 10 times rated current ($5 \times I_n$ to $10 \times I_n$), making it ideal for managing moderate inrush surges from small motors, control transformers, and solenoid valves without nuisance tripping.
Modular DIN-Rail Footprint: Compact 2-pole design allows quick, tool-free snap-on mounting on standard 35mm DIN rails.
Finger-Safe IP20 Terminals: Touch-proof screw terminals safeguard installation and maintenance personnel against accidental contact.
High Operational Durability: Built to strict Siemens quality standards for long mechanical and electrical service life in continuous-duty applications.
Industrial Automation Cabinets & PLC Control Loops
Low-Power Control Transformers, Solenoid Valves & Contactor Circuits
Commercial & Residential Sub-Distribution Panels
OEM Machinery, Auxiliary Power Supplies & Instrumentation Lines
Q1: What types of loads are best protected by a 4A Type C MCB like the 5SL4204-7RC?
A: A 4A Type C MCB is ideal for low-power inductive and control loads, such as small control transformers, PLC power supplies, contactor coils, and delicate auxiliary instrumentation loops.
Q2: What does "Type C" tripping characteristic indicate?
A: Type C characteristic means the trip mechanism activates instantaneously at 5 to 10 times its rated current, accommodating moderate inrush surges during equipment startup without tripping.
Q3: Can this MCB be mounted on a standard 35mm DIN rail?
A: Yes, it features a standard modular enclosure designed for quick, tool-free snap-on mounting on standard 35mm DIN rails inside distribution enclosures.
Q4: What is the breaking capacity rating for the Siemens 5SL4204-7RC?
A: It is rated for a 10kA breaking capacity at 415V AC, complying with international standards IEC 60898-1 and IEC 60947-2.
Siemens 5ST3 Series Auxiliary Switches / Fault Signal Contacts: Snap-on contacts for remote trip status signaling and PLC feedback.
Siemens 5ST3 Series Shunt Trips & Undervoltage Releases: Enables automated or emergency remote tripping of the MCB.
Siemens 5ST3 Series Pin/Fork Busbars: Allows fast, clean, and safe parallel power distribution across multiple MCB poles.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 5SL4204-7RC |
| Product Series | SENTRON 5SL4 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current (In) | 4 A |
| Number of Poles | 2 Pole |
| Tripping Characteristic | C Curve |
| Rated Voltage | 415 V AC |
| Maximum Operating Voltage | 440 V AC |
| Breaking Capacity | 10 kA |
| Frequency | 50/60 Hz |
| Mounting Type | DIN Rail Mount |
| Connection Type | Screw Terminals |
| Degree of Protection | IP20 |
| Mechanical Life | 10,000 Operating Cycles |
| Energy Limitation Class | 3 |
| Standards | IEC 60898-1, IEC 60947-2 |
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