TOMZN TO219G 80A 2-Pole Manual Changeover Switch – 400V AC I–0–II Dual Power Transfer

Product Identification

Important: Although the manufacturer page uses “circuit breaker” wording in its product title/category, no overload or short-circuit breaking specification was found for this exact 80A model. It should be presented primarily as a manual transfer/changeover isolating switch, not as a substitute for an MCB, MCCB, fuse, RCBO or automatic transfer switch. Correct upstream protection and professional installation are required.

Product Title

TOMZN TO219G 80A 2-Pole Manual Changeover Switch – 400V AC I–0–II Dual Power Transfer

Short Description

The TOMZN TO219G is an 80A, 2-pole manual changeover switch designed for controlled selection between two AC power sources. Its I–0–II mechanism provides Source I, centre-off isolation and Source II positions for utility, generator, inverter and backup-power applications.

Long Description

The TOMZN TO219G 80A manual changeover switch offers a straightforward way to select between two independent AC supplies within a professionally designed electrical system. The 2-pole device is rated at 400V AC and uses two adjacent blue operating handles with three selectable states: Source I, centre 0 and Source II.

TOMZN's official product information confirms the TO219G 2P 80A model and documents its contact states. In position I, terminals 1–2 and 5–6 are connected. In position II, terminals 1–4 and 5–8 are connected. In the middle position, both contact groups are disconnected. This centre-off arrangement supports deliberate manual isolation before selection of the alternate source.

The product is suitable for professionally engineered mains/generator, mains/inverter and other two-source AC arrangements. It does not provide automatic source detection or automatic transfer. Cable sizing, protection, enclosure selection, earthing and installation must be completed by a qualified electrician according to the applicable electrical code.

Key Features

• Exact TOMZN TO219G 80A model

• 80A rated current

• 2-pole manual source switching

• 400V AC rating

• 50/60Hz frequency marking

• Three-position I–0–II operation

• Centre-off position disconnects both contact groups

• Manual selection between two independent AC sources

• Two adjacent ribbed blue operating handles

• AC-22A utilization category printed on the product

• Ui 690V rated insulation voltage printed on the product

• IEC/EN 60947-3 and GB/T 14048.3 markings

Technical Specifications

Applications

• Manual utility-to-generator changeover

• Manual utility-to-inverter changeover

• Solar/PV-supported AC systems with appropriate system design

• Residential backup-power distribution

• Commercial backup-power distribution

• Essential-load source selection

• Electrical distribution and control panels

• Systems requiring a centre-off isolation position

Box Contents

• TOMZN TO219G 80A 2-pole manual changeover switch: Not Verified as official package content

• Installation instructions: Not Verified

• Mounting accessories: Not Verified

Protection and Functional Features

• Two-pole manual switching

• Three selectable positions: I–0–II

• Centre position disconnects both contact groups

• Manual isolation between two selected source paths

• Contact states for both source positions documented by TOMZN

Not verified as included: overload protection, short-circuit protection, residual-current/leakage protection, surge protection, under/over-voltage protection, automatic source sensing or automatic transfer. Use appropriately rated upstream protective devices.

Certifications and Standards

• IEC/EN 60947-3 marking: visible on product

• GB/T 14048.3 marking: visible on product

• CE mark: visible on product

• Downloadable conformity certificate or certificate number: Not Verified

• RoHS: Not Verified

Warranty

Official manufacturer warranty term for this exact model: Not Verified.