China TY-Intermediate Protection Box Suppliers - Durable Single & Three-Phase Meter Boxes from Reliable Factory
- Basic Materials: The SMC composite material (glass fiber reinforced unsaturated polyester resin) is molded in one piece, giving the box high mechanical strength and dimensional stability.
- Safety Performance: Insulation resistance ≥ 20MΩ, natural insulation without grounding, eliminating the risk of leakage; The flame retardant grade reaches FV0, and no toxic gas is released at high temperature.
- Environmental Adaptability: Acid and alkali corrosion resistance, UV aging resistance, applicable temperature range -50℃~160℃; The surface is smooth and beautiful, impact-resistant and scratch-resistant.
- Ultra-long Life: Over 40 years of indoor use and over 30 years of outdoor use, significantly exceeding traditional metal/plastic cabinets.
- Flexible Installation: Supports free combination of single-household and multi-household as well as cross-household installation, suitable for residential construction and civil power transformation scenarios; concealed wiring design simplifies construction, and IP54 protection level ensures reliability of outdoor rain and dustproof.
- The ambient temperature is -25℃ ~+50℃, and the average temperature within 24 hours does not exceed +35℃.
- The air should be clean, and the relative humidity should not exceed 80% at 40℃. Higher relative humidity is allowed when the temperature is lower.
- Main bus: 10-250A (rated current), 30kA (short-time withstand)
- Insulation performance: ≥20MΩ, 800V
- Versatility: 50/60Hz
- Protection: IP44
| TY | DX | ZB | 1 |
| Company Code | Single Phase | Intermediate protection box | First Generation |
| Configuration | Name | Component Model | Quantity |
| Incoming switch | Disconnector | HD11F-100/28 100A | 1 |
| Outlet switch | Molded case circuit breaker | CDMK-250/2300 160A | 1 |
| TY | SX | ZB | 1 |
| Company Code | Three-phase | Intermediate protection box | First Generation |
| Configuration | Name | Component Model | Quantity |
| Incoming switch | Disconnector | HD11F-200/48 200A 19CM | 1 |
| Outlet switch | Molded case leakage circuit breaker | TZB-250/3P+N 160A | 1 |
The box is constructed from SMC composite material (glass fiber reinforced unsaturated polyester resin), molded in one piece to ensure superior mechanical strength and dimensional stability.
These boxes feature an ultra-long service life. They are designed to last over 40 years for indoor installations and over 30 years for outdoor applications, far outlasting traditional metal or plastic alternatives.
The box provides high insulation safety with an insulation resistance of ≥ 20MΩ, requiring no grounding. It also has a flame retardant rating of FV0 and does not release toxic gases even at high temperatures.
It operates within a temperature range of -25℃ to +50℃ (average 24-hour temp ≤ +35℃) in clean air conditions. Relative humidity should not exceed 80% at 40℃, though higher humidity is tolerated at lower temperatures.
The system supports AC 50Hz or 60Hz frequencies, rated working voltages of 220V, 380V, and 690V, and rated working currents ranging from 10A up to 250A.
The standard configuration offers an IP44 protection rating, while the outdoor installation design reliably meets IP54 standards for dust and rain protection.