Engine test plug

Test plug for connecting to motor terminal blocks

Speed up your engine tests and save valuable time with our new engine test plugs! We know all too well the time-consuming problem of connecting engine terminal blocks.

Our motor test plugs enable quick connection to 6-, 8-, or 9-pin motor terminal blocks. This gives you the efficiency and speed you need to optimize your testing processes and achieve the best results.

Key Facts:

For test voltages up to max. 6 kV HV AC and impulse voltage
Low contact resistance – ideal for resistance measurement
For clipboards with screw bolts M4, M5, M6, M8 and M10
For motor terminal blocks with 6, 8 or 9 screw bolts
Very robust and quickly interchangeable collets
Optionally available with quickly replaceable grounding spikes

22 Product Variants

Engine test plug – M4, 8 x 16 mm, slim fit

Threaded stud	M4
Number of bolts	8
Spacer bolt spacing	16 mm
Order number	4035-4-8.16-S

Engine test plug – M6, 6 x 30 mm

Threaded stud	M6
Number of bolts	6
Spacer bolt spacing	30 mm
Order number	4035-6-6.30

Engine test plug – M10, 6 x 44 mm

Threaded stud	M10
Number of bolts	6
Spacer bolt spacing	44 mm
Order number	4035-10-6.44

Show all 22 product variants

Contact electric motors quickly.

Every motor manufacturer is familiar with the problem of time-consuming contacting of the motor terminal block. To save considerable time, SCHLEICH has developed a new motor terminal block connector. This innovation was worth four patent applications to us.

The types of engine test plugs are designated according to the size of the engine-side connection thread (M4, M5, M6, M8, or M10). Due to the different spacing of the threaded studs, various versions are available for each type.

To cover the entire range from small to large clipboards, three sizes were defined. Functionally, they all work the same.

The sizes:

Size 1	137 x 89 x 170 mm	H x W x L*
Size 2	137 x 107 x 180 mm	H x W x L*
Size 3	137 x 142 x 200 mm	H x W x L*

*in the tensioned state (lever horizontal)

The terminal box of the motor test plug offers ample space for convenient connection of the leads. Additional dividers between the terminals and cable guides ensure reliable insulation during surge voltage, high voltage, and partial discharge tests.

The motor test plugs can be equipped with one or two leading grounding probes. These contact the mounting screws of the terminal blocks, which in turn must be connected to the motor housing. The grounding probe can be replaced directly from the outside.

The collets can also be changed without having to disassemble the motor test plug into individual parts.

As an alternative to grounding spikes, a ground wire with an alligator clip can be connected to the motor test plug if required. The terminal box is equipped with a corresponding cable gland. The ground wire is then simply clamped to the motor housing.