SC-Type Copper Terminal (also known as Inspection Port Terminal or SC-Type Cable Lug) is a cable connector with an observation window, primarily used for terminal connections between wires and electrical equipment. Below are its key knowledge points and selection/application recommendations:
1. Structure and Features
Inspection Port Design
The terminal has an observation window (“inspection port”) on the side, allowing visual confirmation of wire insertion depth and positioning during crimping. This reduces human error and improves installation consistency and reliability.
Material and Process
- Made of **T2-grade copper (≥99.9% copper content)** for excellent conductivity.
- Tin-plated surface to prevent oxidation and electrochemical corrosion, extending service life.
Mechanical Performance
Installed using hydraulic crimpers or specialized tools. Provides a secure, vibration-resistant connection after crimping. Operating temperature range: -55°C to +150°C.
2. Specifications and Models
Model Naming Convention
Models are typically labeled as “SCNumber-Number,” e.g.:
- SC10-8: For 10mm² wire cross-section, screw hole diameter 8mm.
- SC240-12: For 240mm² wire, screw hole diameter 12mm.
Coverage Range
Supports wire cross-sections from 1.5mm² to 630mm², compatible with various screw hole diameters (e.g., 6mm, 8mm, 10mm).
3. Applications
- Industries: Appliances, power distribution cabinets/boxes, machinery, shipbuilding, railways, etc.
- Scenarios: High-precision electrical connections, frequent maintenance environments (e.g., power distribution systems).
4. Selection and Installation Guidelines
Match Wire Cross-Section
Select the model based on the cable’s nominal cross-section (e.g., SC25 for 25mm² cables).
Screw Hole Compatibility
Ensure the terminal’s screw hole diameter matches the connected device or copper busbar to avoid poor contact.
Installation Tips
- Use hydraulic crimpers for tight bonding between terminal and wire.
- Verify full wire insertion via the inspection port to prevent loose connections.
Comparison with Other Types
Open-End Terminal (OT-Type):
- Advantages: Higher installation accuracy with the inspection port, reducing rework rates.
- Disadvantages: Slightly lower sealing performance compared to oil-blocking terminals (DT-Type), unsuitable for fully sealed environments.
Post time: Mar-12-2025
