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MLA-E

Mechanical fuse screw terminals

Gallery

MLA-E

Mechanical fuse screw terminals

Documentation

Instructions (pdf)

Description

The MLA-E mechanical cable lugs are designed for the safe and reliable connection of copper and aluminium conductors in modern electricity generation, transformation and distribution systems.

The connection is made via mechanical clamping with stepless screws: the screws have no predetermined breaking point and ensure the optimal breaking torque is achieved, reducing installation errors and improving clamping quality.
The anti friction disc ensures reduced friction for greater contact force and prevents damage to the strands.
CEMBRE screws also maintain traceability after breakage (batch number marked on the screw base), simplifying maintenance and ensuring compliance with standards.

They offer:

Easy installation: no crimping tools required — a hex socket spanner is sufficient.
Reduced installation errors: optimal breakaway torque guaranteed by stepless technology.
Versatility: one connector covers multiple conductor cross-sections.
Reliability and safety: high-performance electrical contact even in harsh conditions.
Guaranteed traceability: markings remain visible after screw breakage.
Safer installation: removable centering devices and protective caps eliminate sharp edges.

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Stepless technology

No predetermined breaking point
Consistent thread load capacity
Guaranteed optimal breaking torque

Cover caps

Complete coverage of the hole and screw break off area
Restores the cylindrical shape of the barrel body
Meets industrial safety requirements
Eliminates sharp edges and potential damage points

Screw anti friction disc

No damage to strands
Reduced friction

Internal knurling

Improved removal of aluminium oxides
Increased traction strength
Increased conductivity and current flow
Low contact resistance and improved reliability

Removable centring rings

Removable without damage if the wrong size is selected
Optimal centring for different conductor diameters
Minimised stress in the transition zone between connector body and insulation

CENTRAL STOP

Ensures correct conductor positioning
Prevents oil leakage with oil impregnated conductors
Enables transitions from polymer to oil impregnated conductors

Common features in table.

Features

Details by type in expandable section below.

Technical information
Material composition and treatments
Weight and dimensions
Logistic
Classification and data ordering

Minimum operating temperature

-50 °C

Maximum operating temperature

150 °C

Number of holes on the palm

Geometry of the clamping element

Hexagonal wrench

Surface treatment

tin plating

Grease inside the barrel

Yes

Number of clamping elements

Torque of the clamping element

40 Nm

Range of cable cross section

50 ÷ 240 mm²

Conductor body material

Alluminio con purezza superiore al 99,5%

Clamping element material

brass

Centering device material

Polyamide PA6

Palm width

32.2 mm

Centre distance between the palm hole and the outer edge of the eyelet

16.5 mm

Centre distance between the palm hole and the transition point

18.5 mm

Centre distance between the palm hole and the outer edge of the barrel

90 mm

Spanner size

6 mm

Total length

106.5 mm

Inner diameter of the barrel

20 mm

Cable stripping length

68 mm

Outer diameter of barrel

33 mm

Unit in minimal packaging

1 PCE

Unit in standard packaging

6 PCE

Customs code

85369010

MLA-E

	Weight and dimensions
tipo	Screw diameter	ØD [mm]	Tightening torque (high conductivity screw) [nm]	Tightening torque (8.8 grade screw) [nm]
MLA50-240-12E	M12	13	40	50
MLA50-240-16E	M16	16.5	90	90

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