Why Choose the Cembre 2180120 A3-M5/9 Narrow-Palm Copper Ring Terminal?
The Cembre 2180120, also designated as the Cembre A3-M5/9, is a professional non-insulated narrow-palm copper compression ring terminal designed to terminate 16 mm² copper conductors onto M5 threaded studs. As part of the specialist Cembre A-M contained-palm terminal series, it is specifically developed for low-voltage circuit breakers and other electrical equipment with reduced-space terminal blocks.
Manufactured from annealed electrolytic copper tube with a purity above 99.95%, the Cembre A3-M5/9 provides excellent electrical conductivity and the ductility required for dependable compression crimping. Its electrolytic tin-plated finish helps protect the copper against oxidation and corrosion, supporting reliable long-term performance in industrial control panels, switchgear and power distribution assemblies.
The terminal combines a 16 mm² conductor capacity with a compact 9 mm palm width, allowing easier installation where conventional cable lugs are too wide. It features a 5.3 mm fixing hole, an internal tapered barrel for easier conductor insertion and an inspection hole that enables installers to verify correct cable positioning before crimping.
Key Advantages
- Compact narrow-palm compression terminal for restricted terminal spaces.
- 16 mm² conductor capacity for industrial copper cable connections.
- M5 stud compatibility for low-voltage circuit breakers and equipment terminals.
- High-purity annealed copper provides excellent conductivity and crimping performance.
- Electrolytic tin plating improves resistance to oxidation and corrosion.
- Inspection hole confirms correct conductor insertion before crimping.
Key Features
- Cembre A-M contained-palm ring terminal series.
- Manufacturer part number: 2180120.
- Terminal designation: A3-M5/9.
- 16 mm² / 6 AWG conductor compatibility.
- M5 fixing hole with a nominal 5.3 mm diameter.
- 9 mm narrow palm for reduced-space terminal blocks.
- Internally tapered barrel for easier conductor insertion.
- Suitable for hexagonal and indent compression crimping.
Reliable Cable Termination for Reduced-Space Circuit Breakers
Narrow-palm compression terminals are designed for electrical equipment where the available connection width is smaller than the palm of a conventional cable lug. The contained 9 mm palm of the Cembre A3-M5/9 allows a 16 mm² conductor to be connected securely to compact M5 terminals without compromising electrical or mechanical performance.
The Cembre A-M contained-palm series creates a permanent electrical connection by compressing the annealed copper barrel around the conductor strands. When installed using a compatible professional crimping tool and the correct die, the terminal provides excellent electrical continuity, high pull-out resistance and dependable performance under vibration and thermal cycling.
Typical Applications
- Low-voltage circuit breakers with reduced-space terminals.
- Industrial control panels and electrical cabinets.
- Switchgear and power distribution assemblies.
- Motor control centres and machinery connections.
- Compact busbar and equipment-terminal connections.
- OEM automation systems and industrial electrical installations.
