PDF User Manual

© Techno s.r.l.     All rights reserved.

Assembly instructions for TH387

Specifications of Torque Forces

16 March 2017

TH387 screw terminals tightening 

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2

Screw tightening 

THB.387.x2x.x 
THB.387.x3x.x
THB.387.x4x.x  
max. 0.8 Nm

THB.387.x5x.x  
max. 0.2 Nm

Cable cross-section

0.5 mm

2 

– 4.0 mm

2

Stranded and solid 

conductors

0.25 mm

2 

– 2.5 mm

2

Stranded and solid 

conductors

TH387 cable-to-cable (long cable gland)

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3

Cable gland
Clockwise - 2.5 Nm

22 mm

Nut
Clockwise - 2.5 Nm

22 mm

Ferrule
Clockwise - 1.0 Nm
(until fully seated)

Code: TH

x

.387.

xxx

.L

Code: TH

x

.387.

xxx

.L

Matching the connectors

•

Turn the ferrule clockwise until 
fully seated (max. 1.0 Nm)

•

Also, it is enough to tighten 
until you notice firm resistance 
to rotation

•

The plug and socket will be 
matched correctly and the IP68 
resistance guaranteed

TH387 cable-to-cable (short cable gland)

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4

Cable gland
Clockwise - 2.5 Nm

22 mm

Nut
Clockwise - 2.5 Nm

22 mm

Ferrule
Clockwise - 1.0 Nm

Code: TH

x

.387.

xxx

Code: TH

x

.387.

xxx

Matching the connectors

•

Turn the ferrule clockwise until 
fully seated (max. 1.0 Nm)

•

Also, it is enough to tighten 
until you notice firm resistance 
to rotation

•

The plug and socket will be 
matched correctly and the IP68 
resistance guaranteed

How to use the quick-fix spanner

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5

Top 

Bottom

Nut

Code: 

TH

x

.387.

xxx

.L

Other products (i.e. TH405)

Nut

Code: 

TH

x

.387.

xxx

to be used for

to be used for

Bottom

How to use the quick-fix spanner (cont.)

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6

1.

Turn the nut (A) of the connector clockwise 
using the quick-fix spanner

2.

Continue to turn it up to the nut will not turn 
more. You will hear a noise due to 
friction of the key on the nut

3.

At this point you have the nut tighten with a 
torque force of 2.0 Nm 

÷ 2.5 Nm

4.

Important: the cable gland (B) will be 
tightened automatically when turning the 
nut (A)

5.

Cable retention and IP68 resistance are 
guaranteed (acc. to EN61984 and 
EN60998/EN60529)

example

A

B

TH387 panel-mounted M20 (non conductive panel)

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Fixing nut
Clockwise - 1.5 Nm

22.4 mm

Code:  TH

x

.387.M

xx

TH

x

.387.L

xx

Panel thickness: 1.0 mm ÷ 3.5 mm

Important
In order to hold the panel-
connector when panel-
mounting, you should insert the 
plug (or socket) connector into 
the panel-socket (or panel-plug) 
connector.
A specific assembly tool is 
available starting May ‘17 

TH387 panel-mounted M20 (all panels)

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8

Fixing nut
Clockwise - 1.5 Nm

23

Code:  TH

x

.387.N

xx

TH

x

.387.P

xx

Panel thickness: 
1.0 mm ÷ 9.0 mm

Fixing nut
Clockwise - 1.0 Nm

19

A

B

A

B

20

19

Important
In case of circular hole, in order to hold 
the panel-connector when panel-
mounting, you should insert the plug (or 
socket) connector into the panel-socket 
(or panel-plug) connector.
A specific assembly tool is available 
starting May ‘17 

TH387 panel-mounted M25

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9

Fixing nut
Clockwise - 1.5 Nm

32

Fixing nut
Clockwise - 1.0 Nm

23

A

B

Important
In case of circular hole, in order to hold 
the panel-connector when panel-
mounting, you should insert the plug (or 
socket) connector into the panel-socket 
(or panel-plug) connector.
A specific assembly tool is available 
starting May ‘17 

Code:  TH

x

.387.F

xx

TH

x

.387.E

xx

Panel thickness: 
1.0 mm ÷ 7.0 mm

TH387 panel-mounted M25

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10

Fixing nut
Clockwise - 1.5 Nm

32

Fixing nut
Clockwise - 1.0 Nm

23.3

A

B

Important
In case of circular hole, in order to hold 
the panel-connector when panel-
mounting, you should insert the plug (or 
socket) connector into the panel-socket 
(or panel-plug) connector.
A specific assembly tool is available 
starting May ‘17 

Code:  TH

x

.387.C

xx

TH

x

.387.D

xx

Panel thickness: 
1.0 mm ÷ 7.0 mm

TH387 panel-mounted (all versions)

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11

Ferrule
Clockwise - 1.0 Nm
(until fully seated)

Matching the connectors



Turn the ferrule clockwise until fully seated 
(max. 1.0 Nm).



Also, it is enough to tighten until you notice firm 
resistance to rotation



The plug and socket will be matched correctly 
and the IP68 resistance guaranteed