Bolt-Type Apparatus Clamps A4AB are designed for connecting a single aluminum or steel-aluminum conductor to electrical apparatus terminals during the installation of open switchgear (OSG). Manufactured according to TU 3449-001-52819896-2010.

Design Advantages:

• Simplified installation: the clamps can be installed without the use of crimping equipment.
• Moisture accumulation prevention: the clamp's design prevents moisture buildup when positioned vertically, a common issue with traditional apparatus clamps. Freezing moisture in such clamps can lead to the conductor being "pushed out" despite crimping.
• Enhanced electrical contact: the use of thermodynamic copper spraying on the contact surface increases coating thickness, extends the clamp's service life up to 50 years, and significantly improves electrical contact quality.

Technical Specifications:

• A4AB 70-120:
  • Conductor cross-section: 70/11, 95/16, 120/19, 120/27 mm²
  • Conductor diameter: 11.4–15.2 mm
  • Weight: 2.15 kg
• A4AB 150-185:
  • Conductor cross-section: 150/19, 150/24, 150/34, 185/24, 185/29, 185/43 mm²
  • Conductor diameter: 16.8–19.6 mm
  • Weight: 2.11 kg
• A4AB 205-240:
  • Conductor cross-section: 205/27, 240/32, 240/39, 240/56 mm²
  • Conductor diameter: 19.8–22.4 mm
  • Weight: 2.05 kg