Tomzn 4P+4P 63A Manual Transfer Switch

Tomzn 4P+4P 63A manual transfer switch provides controlled manual changeover between two compatible AC power sources. Its paired four-pole arrangement is intended for installations where the required conductors, including the neutral when specified by the system design, must be switched between sources such as utility power and a correctly configured generator, inverter or solar backup supply.

The switch has a DIN-rail format for installation inside a suitable electrical distribution enclosure. A linked operating mechanism helps prevent both source paths from being intentionally selected at the same time. Because source-transfer wiring affects earthing, neutral treatment, fault protection and back-feed safety, selection and installation must be completed by a qualified electrician using the actual system diagram and applicable regulations.

Tomzn 4P+4P 63A Manual Transfer Switch Features

• Manual changeover between two compatible AC supplies
• 4P+4P paired switching arrangement
• Stated current rating: 63A
• Stated operating voltage: 230/400V AC
• Stated frequency: 50/60Hz
• DIN-rail format for a suitable distribution box
• Mechanical operating handle for deliberate source selection
• Suitable for correctly designed grid, generator, inverter or solar-backup systems

The Tomzn 4P+4P 63A manual transfer switch is best selected after confirming the installation diagram, load requirements and protective devices.

Product Specifications

Common Applications

The Tomzn 4P+4P 63A manual transfer switch can be considered for compatible residential, commercial and workshop systems that require manual selection between two AC sources. Examples include utility and generator supplies, grid and inverter backup, or a properly engineered solar-backup arrangement. The correct pole configuration depends on the distribution system, neutral arrangement and local electrical rules.

Before ordering the Tomzn 4P+4P 63A manual transfer switch, confirm the normal current, conductor size, fault level, number of poles, enclosure space and upstream protection. A 63A marking does not mean that every installation can safely carry 63A; cable capacity, terminals, ambient temperature, protective devices and installation method must all be coordinated.

Installation Guidance

1. Prepare a system diagram showing both sources, loads, neutral and protective-earth conductors.
2. Isolate and verify both incoming sources before beginning work.
3. Mount the device securely on a compatible DIN rail inside a suitable enclosure.
4. Use conductor sizes, terminals and tightening torque specified for the installation.
5. Connect the sources and load only according to the verified product markings and system design.
6. Check mechanical operation, insulation, polarity and protective-device coordination.
7. Label both sources and test the complete changeover sequence before use.

Important Protection Note

A manual transfer switch selects a power source; it should not automatically be treated as a substitute for an appropriately rated MCB, MCCB, fuse, RCD/RCBO, surge protection device or other required protection. Install the correct upstream and downstream protective devices for each source and load. Never connect two unsynchronised sources together.

Why Buy from HN Electric?

HN Electric supplies TOMZN switching and protection products across Pakistan. Review product specifications before ordering and consult a qualified electrician for system compatibility. Browse the TOMZN product range or compare suitable distribution boxes for organized installations.

For general electrical safety and equipment-standard guidance, consult the International Electrotechnical Commission and follow applicable Pakistani wiring requirements. Product selection must still be based on the markings and documentation supplied with the actual unit.

Safety Notice

This equipment operates at hazardous mains voltage. Installation, testing and maintenance must be performed by a qualified electrician with all power sources isolated and verified dead. Follow local electrical regulations, provide appropriate enclosure protection and do not operate damaged or overheated equipment.

Tomzn 4P+4P 63A Manual Transfer Switch FAQs

What does 4P+4P mean?

It describes two paired four-pole switching paths. The exact conductor arrangement must follow the system diagram and product terminal markings.

Does this transfer switch change sources automatically?

No. It is manually operated. Automatic changeover requires a suitable automatic transfer switch and correctly designed control system.

Can it be used between grid and generator power?

It may be suitable when ratings, neutral arrangement, protection and wiring design are compatible. A qualified electrician must confirm the installation.

Is this device an MCB?

Its format may resemble modular breakers, but source-transfer functionality must not be assumed to provide all required overcurrent or earth-leakage protection.

Can it switch a neutral conductor?

The four-pole configuration can support systems designed to switch the required conductors, but neutral and earthing treatment must follow local rules and the specific installation design.