Circuit Breakers - Electrical, Lighting and Power
Marine circuit breakers protect shipboard lighting, distribution and power circuits against overloads and short circuits. They are available as miniature, molded-case and air circuit breakers, with ratings selected for the vessel voltage, fault level and classification requirements.
ProShipWorks provides end-to-end support to source and supply Circuit Breakers for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Circuit Breakers |
|---|---|
| Product Category | Electrical, Lighting and Power |
| Product Reference | 120 |
| Brands / Manufacturers | ABB, Schneider Electric, Eaton, Siemens, Mitsubishi Electric |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Overload and short-circuit protection |
| 2. Thermal-magnetic or electronic trip units |
| 3. Manual isolation and circuit switching |
| 4. Compact, molded-case or air-breaker construction |
| 5. Optional auxiliary, alarm and shunt-trip contacts |
Applications of Circuit Breakers
| Application |
|---|
| 1. Main and emergency switchboards |
| 2. Motor control and power distribution panels |
| 3. Lighting, socket and small-load circuits |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| Tmax XT | ABB |
| SACE Emax 2 | ABB |
| Compact NSX | Schneider Electric |
| MasterPact MTZ | Schneider Electric |
| NZM | Eaton |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| Compact NSX | Breaker type | Molded-case circuit breaker | — |
| Compact NSX | Rated current range | Up to 630 | A |
| MasterPact MTZ | Breaker type | Air circuit breaker | — |
| MasterPact MTZ | Rated current range | Up to 6300 | A |
| Tmax XT | Breaker type | Molded-case circuit breaker | — |
| Tmax XT | Rated current range | Up to 1600 | A |
| SACE Emax 2 | Breaker type | Air circuit breaker | — |
| SACE Emax 2 | Rated current range | Up to 6300 | A |
| NZM | Breaker type | Molded-case circuit breaker | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Commonly designed and tested to IEC 60947-2. Marine installations may also require IEC 60092-202 and applicable type-test or product-certification requirements. Final compliance depends on the selected breaker, configuration and vessel project specification. |
|---|---|
| Class Approval | Marine-approved configurations may be accepted by DNV, ABS, Lloyd's Register, Bureau Veritas, ClassNK and RINA. Approval is model-, rating- and installation-specific and should be verified from the manufacturer's type-approval certificate. |
Installation, Maintenance & Safety Information
| Installation Notes | Select voltage, poles, rated current, interrupting capacity and trip characteristics from the approved single-line diagram and prospective-fault calculation. Install with specified clearances, torque values, cable sizes and enclosure protection. Verify phase identification and insulation before energizing. |
|---|---|
| Maintenance Tips | Inspect terminals, insulation, operating mechanism and trip-unit settings periodically. Remove dust and salt deposits, check tightening torque, exercise stored breakers and perform insulation and functional trip tests according to the vessel maintenance plan and manufacturer instructions. |
| Safety Notes | Installation and testing must be performed by qualified electrical personnel under an approved isolation and lockout procedure. Confirm the circuit is de-energized before work. Never exceed the breaker's voltage, current or interrupting rating, and do not bypass protective trips. |
Request a Quote for Circuit Breakers
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
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