EXBZ7-63 Manual Transfer Switch（MTS PC Class）
Modular Changeover from 16A to 63A — Add Poles as Your Panel Grows
The EXBZ7-63 is a modular changeover switch for panels that have to grow: current ratings from 16A to 63A, pole counts from 1P to 4P, and 16mm² terminals in a flame-retardant nylon body rated 240/415V. The 1-0-2 handle gives a definite break-before-make transfer between two sources, and the standard 35mm rail clip lets one design be reused across single-phase, three-phase and neutral-switching circuits.
Model
EXBZ7-63 Series — Changeover Switch (MTS PC Class)EXBZ7-63 (16A / 20A / 25A / 32A / 40A / 63A)
IEC/EN 60947-3 · 240/415V · 16mm² terminals · IP20 · modular poles
Product Details
- Modular changeover switch for dual power supply and dual-circuit switching: 16A, 20A, 25A, 32A, 40A and 63A ratings.
- Pole configurations 1P, 2P, 3P, 4P with contact form 1-0-2; rated voltage 240/415V at 50/60Hz.
- PC class device for switch-disconnector duty under normal conditions; short-circuit protection from an upstream device.
- 16mm² terminals, flame-retardant nylon housing, IP20, 1500 electrical / 8500 mechanical cycles.
Product Information
Key Features & Typical Use
Modular Design for Circuit Scalability
Poles are added as the circuit requires: start with a 2P single-phase changeover and specify 4P for a three-phase panel with switched neutral. One product family, one mounting footprint, fewer special parts on the shelf.
Rating Range That Fits Real Panels
Six ratings from 16A to 63A cover lighting and socket sub-boards through to 63A three-phase feeds — the practical sizes electricians actually order, rather than a gap-ridden catalogue.
16mm² Termination
Larger terminals compared with the 40A frame accept the cable sizes used in 63A distribution boards, keeping terminations reliable at full load and reducing the number of separate part numbers needed for a mixed panel.
Defined Positions and Isolation Protection
The 1-0-2 handle position, plus a flame-retardant nylon housing with isolation protection, keeps operation unambiguous — important when the changeover is also used as the isolation point for maintenance work.
Specifications
| Parameter | Details |
|---|---|
| Series | EXBZ7-63 Changeover Switch (MTS, PC class) |
| Rated Current | 16A / 20A / 25A / 32A / 40A / 63A |
| Rated Voltage | 240/415V |
| Rated Frequency | 50/60Hz |
| Number of Poles | 1, 2, 3, 4P (modular) |
| Contact Form | 1-0-2 |
| Class | PC class — switch-disconnector duty under normal conditions |
| Electrical Life | 1500 cycles |
| Mechanical Life | 8500 cycles |
| Terminal / Cable Size | 16mm² |
| Mounting | DIN rail EN 60715 (35mm) with fast clip device |
| Protection Degree | IP20 |
| Ambient Temperature | -5°C to +40°C |
| Housing Material | Flame-retardant nylon |
| Standard | IEC/EN 60947-3 |
| Typical Function | Dual power supply · dual-circuit switching · isolation |
EXBZ7-63 — The Changeover Switch a Panel Builder Can Reuse Across Every Circuit
Panel builders dislike variety for its own sake: every different rating means a different rail length, a different label and a different spares line. The EXBZ7-63 is designed around reuse. Ratings from 16A to 63A and pole counts from 1P to 4P share the same modular body, so a changeover for a lighting circuit, a single-phase sub-board and a 63A three-phase feed can all come from the same family — and the switch clips onto a standard 35mm rail with the fast clip device.
Electrically it behaves the way a changeover should: a 1-0-2 handle that breaks before it makes, so two sources are never paralleled, and a PC class rating intended for switch-disconnector duty under normal conditions, with short-circuit protection delegated to the upstream protective device. Terminals accept 16mm² cable, IP20 touching protection and flame-retardant nylon housing cover day-to-day safety in commercial and light industrial boards.
HUYU manufactures the EXBZ7-63 at our own factory and supplies modular changeover switches to switchgear assemblers, panel builders, wholesalers and OEMs at factory-direct prices, with OEM marking and full IEC/EN 60947-3 documentation.
Factory-Direct OEM / ODM Manufacturer
We Manufacture, You Brand
The EXBZ7-63 is assembled in our own workshop: contact riveting, mechanism fitting and handle indexing are carried out on dedicated lines, and each batch is checked for correct 1-0-2 indexing, contact resistance and terminal torque before packing.
OEM projects can specify pole counts, rating sets and housing marking to match an existing panel range.
- OEM branding — housing and label marking for panel builder and distributor brands.
- ODM options — rating sets, pole counts and handle variants tailored to your panel programme.
- Quality documentation — IEC/EN 60947-3 reports plus routine-test records per batch.
- MOQ — flexible quantities; mixed ratings and pole counts in one shipment.
Buying Guide
Choosing an EXBZ7-63 changeover switch means deciding three things up front: the continuous current, the number of poles, and how the switch will be protected against short circuits.
- Determine the continuous load current and pick the next rating up — 16A to 63A.
- Select the pole count: 1P, 2P (line + neutral), 3P or 4P for full isolation.
- Confirm the upstream fuse or circuit breaker that clears short-circuit faults.
- Check that 16mm² terminals suit your incoming and outgoing cable sizes.
- Label source 1 and source 2 clearly; the 0 position isolates both.
- Approve samples and OEM marking; production with routine testing.
- Global shipping of wholesale orders direct from the factory.
How We Support Your Business
OEM / ODM
Rating sets, pole configurations and housing marking built on the modular EXBZ7-63 platform with full test records.
Rating sets · Pole variants · Test records
Wholesale
Factory-direct pricing on the 16-63A range for distributors supporting panel builders and electrical contractors.
Factory pricing · Mixed ratings · Global shipping
Distributor Support
Panel-design guides, rating and pole selection tables and priority production for channel partners.
Design guides · Priority lead times
Ready to Stock the EXBZ7-63 Series?
OEM/ODM, wholesale pricing and distributor support — one enquiry gets you a factory-direct quotation for modular changeover switches from 16A to 63A in 1P to 4P configurations.
Frequently Asked Questions
What is a modular changeover switch?
A modular changeover switch is built so that the same body can be supplied with different pole counts and current ratings, letting one product family serve several circuit types in a panel. The EXBZ7-63 is available in 1P to 4P and 16A to 63A versions with a common 35mm rail footprint, which simplifies both panel design and spare-part stocking.
How is this different from an automatic transfer switch?
An ATS detects the loss of the preferred supply and transfers the load automatically, using relays or a controller. A manual changeover switch such as the EXBZ7-63 requires an operator to move the handle; in return it has no control electronics, no settings and a visible contact position. Manual changeover suits installations where staff are present, or where a deliberate, physical transfer is preferred.
Which applications suit a 63A changeover switch?
63A changeover switches are commonly used for small commercial distribution boards with mains and generator incoming supplies, workshop sub-panels, HVAC and pump circuits fed from two sources, and as load-break isolating switches for maintenance. Confirm the continuous current of the circuit and keep short-circuit protection upstream.
Does the EXBZ7-63 provide isolation for maintenance?
Yes — the 0 position isolates the load from both sources, and as a PC class switch disconnector under IEC/EN 60947-3 the device is intended to switch on, carry and break currents in normal service and to act as the isolation point. Lock-off provision plus clear source labelling is recommended for maintenance procedures.
What cable size can the terminals accept?
The EXBZ7-63 accepts cables up to 16mm². This covers the typical conductor sizes of 63A distribution circuits; for larger installations step up to the EXBZ7-125 model, whose terminals accept 25mm².
