gem box electrical
**Gem Box Electrical (Gem Brand Electrical Box)** usually refers to the protective boxes for electrical equipment produced by
**Gem Products** (or similar brands). Characterized by **modular design, compact size** and **high protection level**,
it is widely used in residential, commercial and industrial scenarios. The following is the collation of key information:
I. Core Functions
1. **Flexible Power Distribution**:
- Supports multi-circuit wiring, with built-in terminal blocks or circuit breakers, suitable for small-scale circuit distribution.
2. **Space Optimization**:
- It has a small size (such as 4''x4''x2''), and can be installed in narrow spaces (such as walls, cabinets).
3. **Protection Level**:
- Most models reach **IP54/IP65**, which is waterproof and dustproof. Some models support outdoor use.
II. Main Types
1. Classification by Purpose
| Type | Function Description “Function Description | Typical Applications |
| Junction Box | Pure wire connection, without built-in equipment, with knockout holes (Knockout) | Indoor lighting line transfer |
| Device Box | With built-in sockets, switches or 1-2 pole circuit breakers | Power supply for small kitchen appliances, lamp control |
| Mini Distribution Box | Contains a main circuit breaker + 2-4 branch switches, and supports dual voltage of 120/240V | Power supply for small shops, RVs |
2. Classification by Material
- **Plastic (PVC)**:
- It has good insulation and corrosion resistance, and is suitable for dry indoor environments (such as the Gem 100 series).
- **Metal (Cold-rolled Steel)**:
- The surface is galvanized/powder-coated to prevent rust, and is suitable for mild outdoor scenarios (such as the Gem 200 series).
III. Key Parameters (Taking Typical Gem Models as Examples)
| Parameter | Gem 100 (Junction Box) | Gem 220 (Device Box) | Gem 300 (Mini Distribution Box) |
| Size | 4''x4''x1.5'' | 6''x6''x2'' | 8''x6''x3'' |
| Rated Current | 30A | 20A (Socket)/15A (Switch) | Main 60A/Branch 20A×4 |
| Voltage | AC 240V | AC 120V | AC 120/240V |
| Protection Level | IP54 | IP54 | IP54 (Indoor)/IP65 (Outdoor Version) |
IV. Installation and Features
1. **Modular Design**:
- It has expandable accessories (such as partitions, rails, waterproof covers) to meet different needs.
2. **Quick Wiring**:
- With built-in push-in terminals (Push-in Terminals), there is no need to fix the wires with screws.
3. **Compliance Certification**:
- Complies with the standards of **UL 514B** (Junction Box) and **UL 60439-1** (Power Distribution Equipment).
V. Application Scenarios
- **Residential**: Branching of kitchen appliances, attic lighting control, power supply for smart home devices.
- **Commercial**: Retail store shelf lighting, power distribution for network devices in small offices.
- **Industrial**: Machine control panels, power distribution for temporary construction sites.
VI. Brand and Price Reference
| Model | Function | Price Range (US Dollars) | Features |
| Gem 100 | Basic junction box | $5-$8 | Made of plastic, with a single knockout hole |
| Gem 220 | With 1 120V socket | $12-$15 | Metal box, waterproof cover is optional |
| Gem 300 | 4-circuit mini distribution box | $30-$40 | Contains a 60A main circuit breaker, suitable for both indoor and outdoor use |
VII. Comparison with Other Brands
| Brand | Advantages | Disadvantages |
| Gem | Modular design, affordable price | The protection level of outdoor models is lower than that of Hubbell |
| Leviton | High protection level (IP66) | Weak modular expandability |
| Raco | Strong compatibility, suitable for traditional electrical boxes | Conservative design, lack of innovative functions |
Conclusion
**Gem Box Electrical** is suitable for **small and medium-sized circuit installations**, especially for scenarios that require
**flexible expansion** and **compact space**. When choosing, pay attention to:
- For light indoor loads, choose a **plastic junction box** (such as Gem 100);
- For outdoor use or high protection requirements, choose a **metal + IP65 model** (such as the outdoor version of Gem 300);
- When built-in sockets/switches are needed, give priority to the **device box series** to ensure that the current matches the load.
