MJS6-40B ABB Miniature Circuit Breaker MCB High-performance single-pole miniature
MJS6-40B ABB Miniature Circuit Breaker MCB High-performance single-pole miniature
The ABB MJS6-40B is a single-pole Miniature Circuit Breaker (MCB) in the ABB S200 series, specifically designed for overload and short-circuit protection in residential, commercial and light industrial power distribution systems. This product adopts a thermal-magnetic tripping mechanism, featuring high breaking capacity, compact structure and outstanding electrical performance. It is widely used in lighting circuits, socket branches, control power supplies and terminal distribution boxes, providing efficient and reliable electrical safety guarantees for circuits and loads.
Typical application scenarios
Industrial automation
It is used for the starting, stopping and protection of medium-voltage motors, such as water pumps, fans, compressors and other equipment.
Power transmission and distribution
Load switching and protection in scenarios such as medium-voltage switch cabinets and substations.
Energy and infrastructure
Auxiliary control of photovoltaic inverters, pumping stations of water treatment plants, and backup power switching systems.
OEM equipment integration
As a standard component embedded in the OEM control cabinet, it enhances the reliability of the entire machine.
Basic parameters
| Model | MJS6-40B |
| Series | ABB S200 series miniature circuit breakers |
| Rated insulation voltage (Ui) | 500 V AC |
| Rated short-circuit breaking capacity (Icn/Ics) | 6 kA @ 230 V AC |
| Electrical life | ≥ 10,000 times (at rated current) |
| Installation method | 35mm DIN rail (compliant with EN 60715) |
| Both the upper and lower terminals support screw crimping. | Applicable wire cross-sectional area 0.5-25 mm² (copper wire) |
| Operating temperature range | -25°C to +55°C |
| Dimensions (width × height × depth) | 18mm × 82mm × 77mm |
| Weight | ≈ 0.1 kg |
Product Images
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