1/2/4pcs E26/E27 Lamp Bulb Pendant Holder, Suitable for 220V/240V Voltage, Textured Round Fixed Base Bracket

# E26/E27 Bulb Pendant Holder (1/2/4pcs) General Product Requirements

## I. Basic Product Information
- **Product Name**: E26/E27 Screw Bulb Pendant Fixed Base
- **Packaging Options**: 1pc/pack, 2pcs/pack, 4pcs/pack
- **Compatible Bulb Base**: Standard E26/E27 Screw Socket
- **Rated Voltage**: 220V-240V AC
- **Rated Current**: ≥3A
- **Rated Power**: ≥300W (per socket)

## II. Material and Craftsmanship Requirements
1. **Base Material**:
- Main Body: High-strength flame-retardant engineering plastic (PC/ABS/PBT)
- Threaded Socket: Nickel-plated brass or high-quality ceramic material
- Conductive Parts: Pure copper or copper alloy with compliant conductivity

2. **Process Standards**:
- Thread accuracy complies with IEC 60061 standard
- Molded parts free of burrs, shrinkage, or deformation
- Anti-corrosion treatment for metal parts (nickel/chrome plating)
- Insulation layer thickness ≥1.0mm

3. **Surface Finish**:
- Matte/textured surface treatment, fingerprint and scratch resistant
- Uniform color without deviation (standard white/black)

## III. Electrical Safety Requirements
1. **Insulation Performance**:
- Insulation resistance between live parts and housing ≥10MΩ
- Withstand voltage test: 2000V/1min without breakdown or flashover

2. **Wiring Safety**:
- Equipped with standard screw-type terminal blocks
- Clear live/neutral wire markings
- Grounding terminal (if applicable)

3. **Temperature Rise Limit**:
- Temperature rise ≤40K after 4 hours of full-load operation

## IV. Mechanical Performance Requirements
1. **Mounting Structure**:
- Circular base diameter compatible with standard luminaire mounting holes
- Standard M4/M5 mounting holes (at least 2 symmetrical holes)
- Base thickness ≥2.0mm, no deformation

2. **Connection Strength**:
- Bulb insertion torque: 1.5-3.0N·m
- Terminal pull-out force ≥30N
- Overall hanging weight capacity ≥5kg

## V. Operating Environment Requirements
1. **Ambient Temperature**: -20℃ to +60℃
2. **Relative Humidity**: ≤95% RH (non-condensing)
3. **Altitude**: ≤2000m
4. **Installation Location**: Indoor dry environments, protected from direct rain

## VI. Packaging and Labeling
1. **Unit Packaging**:
- Protected with bubble bags or blister packs
- Includes mounting screws and accessories
- Simple installation instructions included

2. **Outer Carton Labeling**:
- Product name, specifications, quantity
- Rated voltage/power
- Production date/batch number
- Safety certification marks (e.g., CE, RoHS)

3. **Product Body Markings**:
- Rated Voltage: 220V-240V
- Maximum Power: 300W MAX
- Polarity markings (L/N)
- Manufacturer information or trademark

## VII. Testing and Certification
1. **Mandatory Test Items**:
- High voltage test (withstand voltage test)
- Ground continuity test (if applicable)
- Polarity test
- Torque test
- Temperature rise test

2. **Recommended Certifications**:
- CE certification (LVD Directive compliant)
- RoHS environmental certification
- IEC 60238 standard compliance

## VIII. Precautions
1. Disconnect power before installation
2. Installation should be performed by a qualified electrician
3. Do not exceed the rated power
4. Not suitable for dimming circuits (unless otherwise specified)
5. Avoid use in high-temperature or humid environments

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**General Version Note**: The above requirements are basic universal standards for E26/E27 bulb base products. Specifications may vary by specific model; please refer to the actual product specifications for details.