Wholesale CT Meter Box Supplier & Factories

Our modular transformer-type enclosures (such as the TY-SXS3 and ground-standing transformer cabinets) are designed with versatile, slotted mounting backplates and adjustable busbar risers. They accommodate standard low-voltage current transformers including 100/5A, 150/5A, 200/5A, 250/5A, 400/5A, 600/5A, 800/5A, and up to 1500/5A or 1A secondary equivalents. We support both window-type ring CTs through which primary insulated cables pass, and solid copper busbar-type CTs (such as LMZ or BH-0.66 standard models).

Unlike metal enclosures that have high thermal conductivity—causing internal moisture to condense rapidly against cold interior walls during nightly temperature plummets—SMC (Sheet Molding Compound) is a thermoset polymer with low thermal conductivity. It acts as a natural thermal insulator. Additionally, our outdoor IP55/IP65 meter cabinets integrate labyrinth-style, insect-proof natural ventilation vents along the bottom rim and under the roof canopy, generating continuous convective airflow that expels condensation without permitting water ingress.

Our products are manufactured under rigorous ISO 9001, ISO 14001, and ISO 45001 quality, environmental, and occupational safety frameworks. Product lines strictly comply with IEC 61439-1 / IEC 61439-2 (Low-voltage switchgear and controlgear assemblies), IEC 60529 (Degrees of protection provided by enclosures - IP codes), IEC 62262 (IK code mechanical impact protection), and IEC 62052-11 (Electricity metering equipment). For European and British Commonwealth tenders, we adapt designs to comply with BS 7657 and DIN 43870 standards.

Yes, full OEM/ODM customization is our core capability. We can provide fully pre-wired solutions: installing T2 pure copper busbars (with heat-shrink insulation tubing in phase-color codes: red, yellow, blue, black), installing client-specified Test Terminal Blocks (TTB), and routing secondary wiring with flame-retardant 2.5 mm² or 4.0 mm² copper conductor wiring harnessed in slotted PVC wiring ducts with individual ferrule labeling. We also punch custom cable knockouts, install brass gland plates, and laser-engrave utility logos directly into the composite doors.

An operating Current Transformer transforms primary high current into a secondary loop that must always remain in a closed circuit. If the secondary loop is opened while the primary conductor is energized, the transformer core saturates immediately, inducing catastrophic lethal voltages (often reaching several thousand volts) across the open terminals, leading to insulation breakdown, violent arcing, and death. A Test Terminal Block provides dedicated mechanical slide links that automatically bridge and short-circuit the CT secondary circuits before an technician disconnects the meter for routine calibration or replacement.

For standard catalog designs (including TY-SXD and TY-SXS series), our MOQ starts at just 50 units for trial shipments, with typical dispatch times of 15 to 20 days. For custom OEM/ODM configurations requiring newly machined compression molds or bespoke sheet-metal tooling, tool fabrication takes approximately 30 to 45 days, followed by rapid sample dispatch within 7 days. Full container orders (20ft or 40ft HQ containers containing 500 to 2,000 units depending on box dimensions) are produced within 25 to 30 days.