S143A | Schneider Electric Miniature Circuit Breaker for Low-Voltage Circuit Protection
Schneider Electric · Circuit Breakers & Protection
Description The Schneider Electric S143A is a miniature circuit breaker designed to protect electrical circuits from overloads and short-circuit conditions in low-voltage installations. It provides reliable automatic disconnection to safeguard wiring and connected equipment. This device is commonly used in industrial control panels, commercial buildings, and electrical distribution boards. Technical Specifications Condition New/Never Used Surplus Brand Schneider Electric Category Circuit Protection Part Number S143A Subcategory Miniature Circuit Breakers Breaker Type Miniature circuit breaker (MCB) Trip Technology Thermal-magnetic Number of Poles 3 Rated Voltage Up to 400 V AC Rated Current Application-dependent (A-curve characteristic) Mounting Type DIN rail Frequency 50/60 Hz Application Branch circuit and equipment protection Standards Compliance IEC standards for MCBs Weight 0.88 lb Information About S143A The S143A is part of Schneider Electric’s miniature circuit breaker product range originally developed under the Merlin Gerin brand for reliable circuit protection. It features a compact, DIN-rail mountable design that allows efficient use of panel space and simplified installation. The breaker is compatible with standard low-voltage AC systems and integrates easily with modular distribution components. Its thermal-magnetic trip technology ensures dependable response to both sustained overloads and instantaneous fault currents. Key Features: Miniature Circuit Breaker Design: Provides automatic protection against overload and short-circuit faults. Thermal-Magnetic Trip Mechanism: Combines thermal and magnetic elements for accurate fault response. Multi-Pole Configuration: Suitable for protecting multi-phase circuits. DIN-Rail Mounting: Enables quick installation and replacement in distribution panels. Compact Form Factor: Optimizes space utilization in control cabinets. Low-Voltage Application: Designed for standard AC distribution systems. Durable Construction: Built for long-term operation in electrical installations. The S143A delivers the reliability and precision required for dependable circuit protection in low-voltage electrical systems.
Brand: Schneider Electric · Category: Circuit Breakers & Protection
Key features
- Miniature Circuit Breaker Design: Provides automatic protection against overload and short-circuit faults.
- Thermal-Magnetic Trip Mechanism: Combines thermal and magnetic elements for accurate fault response.
- Multi-Pole Configuration: Suitable for protecting multi-phase circuits.
- DIN-Rail Mounting: Enables quick installation and replacement in distribution panels.
- Compact Form Factor: Optimizes space utilization in control cabinets.
- Low-Voltage Application: Designed for standard AC distribution systems.
- Durable Construction: Built for long-term operation in electrical installations.
Specifications
| Manufacturer part number | S143A |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Schneider Electric |
| Category | Circuit Protection |
| Part Number | S143A |
| Subcategory | Miniature Circuit Breakers |
| Breaker Type | Miniature circuit breaker (MCB) |
| Trip Technology | Thermal-magnetic |
| Number of Poles | 3 |
| Rated Voltage | Up to 400 V AC |
| Rated Current | Application-dependent (A-curve characteristic) |
| Mounting Type | DIN rail |
| Frequency | 50/60 Hz |
| Application | Branch circuit and equipment protection |
| Standards Compliance | IEC standards for MCBs |
| Weight | 0.88 lb |
| Product type | Miniature Circuit Breakers |
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