Changeover Switches - Electrical, Lighting and Power
Marine changeover switches manually transfer electrical loads between two independent power sources, such as shore power, generator, transformer, or emergency supply. They are used for lighting, distribution boards, pumps, and other shipboard loads where reliable source isolation is required.
ProShipWorks provides end-to-end support to source and supply Changeover Switches for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
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Product Information
| Product Name | Changeover Switches |
|---|---|
| Product Category | Electrical, Lighting and Power |
| Product Reference | 563 |
| Brands / Manufacturers | ABB, Socomec, Kraus & Naimer, Schneider Electric |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Manual transfer between two electrical sources |
| 2. Break-before-make operation on many configurations |
| 3. Two-, three-, or four-pole switching options |
| 4. Suitable for AC lighting and power distribution circuits |
| 5. Visible OFF position and source identification |
| 6. Panel, door, or enclosure mounting options |
Applications of Changeover Switches
| Application |
|---|
| 1. Main and emergency lighting changeover |
| 2. Shore power and generator source selection |
| 3. Main and standby feeder transfer in distribution panels |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| OT40F3C | ABB |
| OT63F3C | ABB |
| SIRCOVER 125 A | Socomec |
| KG20B Series | Kraus & Naimer |
| Kraus & Naimer KG Series | Kraus & Naimer |
| TeSys Vario Changeover Series | Schneider Electric |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| OT40F3C | Rated operational current | 40 | A |
| OT40F3C | Number of poles | 3 | poles |
| OT63F3C | Rated operational current | 63 | A |
| OT63F3C | Number of poles | 3 | poles |
| SIRCOVER 125 A | Rated operational current | 125 | A |
| SIRCOVER 125 A | Transfer arrangement | Manual I-0-II | — |
| KG20B Series | Switch type | Manual rotary changeover | — |
| KG20B Series | Rated thermal current | Model dependent | — |
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 | Typical requirements include IEC 60947-3 for switches, disconnectors and switch-disconnectors, IEC 60947-6-1 for transfer switching equipment where applicable, and IEC 60092-302 for shipboard low-voltage switchgear and controlgear. Certification depends on the exact product and installation. |
|---|---|
| Class Approval | Marine type approval is product- and configuration-dependent. Relevant classification societies may include DNV, ABS, Lloyd's Register, Bureau Veritas, and ClassNK. Verify the manufacturer's type-approval certificate and vessel class requirements before procurement. |
Installation, Maintenance & Safety Information
| Installation Notes | Install by qualified marine electrical personnel in accordance with the wiring diagram, rated voltage, current, short-circuit withstand, pole configuration, and required creepage and clearance distances. Provide suitable upstream overcurrent protection and ensure correct phase identification. Do not connect both sources in parallel unless the equipment is specifically designed and approved for that function. |
|---|---|
| Maintenance Tips | Inspect terminals, enclosure, labels, interlocks, and mechanical operation during planned maintenance. Check for overheating, corrosion, looseness, insulation deterioration, and abnormal contact resistance. Isolate and lock out all sources before servicing. |
| Safety Notes | Treat both incoming sources as live until isolated and verified dead. Use lockout/tagout procedures, appropriate PPE, and test instruments rated for the system voltage. Confirm that emergency and essential-load transfer arrangements comply with the vessel's approved electrical drawings and class requirements. |
Request a Quote for Changeover Switches
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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