| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Current Rating (Amps) | |
| Depth | |
| Halogen Free | |
| Height | |
| Illumination | |
| Mounting Type | |
| Number of Poles | |
| SVHC Present | |
| Supply Voltage | |
| Voltage Rating | |
| Width |
This Siemens 5SJ4303-8HG42 is a 3-pole miniature circuit breaker designed for industrial applications. It features a D-trip characteristic and a rated operational current of 3A at 30°C, with a maximum switching capacity of 10kA according to EN 60898.
The breaker operates with AC/DC voltage and has an insulation voltage of 440V AC. It is suitable for a supply voltage of 400V AC and offers various operating voltage limits for AC and DC, including up to 277V AC according to UL 489 and CSA C22.2 No. 5-02, and up to 125V DC for 2-channel operation.
With a mechanical service life of 10,000 switching cycles, this circuit breaker is built for durability. It has a protection class of IP20 with connected conductors and IP40 in the handle range. The device supports conductor cross-sections from 0.75 mm² to 25 mm² and has a maximum tightening torque of 3.5 N·m for its screw-type terminals. It is halogen-free and silicon-free, contributing to environmental safety.
The physical dimensions are 121mm in height, 54mm in width, and 70mm in depth, with an installation depth of 70mm. It occupies 3 modular width units and is designed for DIN rail mounting, with any mounting position acceptable. The net weight is 492g.
The tripping characteristic is D, designed for high inrush currents.
The rated operational current is 3A at 30°C and 40°C, with derating at higher temperatures.
It holds approvals from CCC, CE, CSA, EAC, UL, and VDE.
The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2.
Yes, it is halogen-free.
It mounts on a standard DIN rail.
The protection class is IP20, with IP40 in the handle range when conductors are connected.