What does self-lock mean on a panel connector?

The self-lock socket connector latches automatically when mated and can only be released with a tool. This prevents accidental disconnection during operation. The other versions use push-pull locking.

What panel thickness can be used?

Up to 7 mm. The mounting nut is included. The cut-out follows the M25 thread.

How do M16, M20 and M25 differ?

Only in panel size. Electrically all three are identical: 25 A at 630 V AC, 0.5 to 2.5 mm², IP66 and IP68. Among the panel versions, however, the self-lock socket connector is available only in M25; a cable-mounted self-lock version also exists.

TH389U M25

Series · 6 variants

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Series no.:: TH389U-M25Housing
Variants:: 6
Series:: TH389U(5 versions)

TH389U with M25 gland: panel-mounted plug and socket connectors, also available as self-lock, 25 A at 630 V, IP66 and IP68.

Common properties

Connection type:Screw connections

Mounting diameter [mm]:25

Housing shape:Round

Housing material:Black plastic

Kabelquerschnitt max. mm²:2.5

Kabelquerschnitt min. mm²:0.5

Kontaktmaterial:Nickel

MaxStrom [A]:25

Montageart:Frontplattenmontage

Schutzart:IP66

Serie:TH389U

Spannung [V]:630

Zulassung:CE

Available options

These properties vary within the TH389U M25 series and can be configured.

Housing:Panel socket connector, Panel plug connector

Polzahl:2+PE, 3+PE

Steckverbindertyp:Buchse, Stecker

Example configurations

A selection of typical configurations from the TH389U M25 series. All 6 variants are listed in the table below.

THB.389.E3EU

TH389U M25 Gehäusesteckverbinder 2+PE polig

Housing:: Panel plug connector
Steckverbindertyp:: Stecker
Polzahl:: 2+PE

THB.389.E4EU

TH389U M25 Gehäusesteckverbinder 3+PE polig

Housing:: Panel plug connector
Steckverbindertyp:: Stecker
Polzahl:: 3+PE

THB.389.F3CU

TH389U M25 Gehäusekupplung self-lock 2+PE polig

Housing:: Panel socket connector
Steckverbindertyp:: Buchse
Polzahl:: 2+PE

THB.389.F4CU

TH389U M25 Gehäusekupplung self-lock 3+PE polig

Housing:: Panel socket connector
Steckverbindertyp:: Buchse
Polzahl:: 3+PE

All variants in the series (6)

Name	Item no.	Housing	Polzahl	Steckverbindertyp
TH389U M25 Gehäusesteckverbinder 2+PE polig Panel plug connector Stecker 2+PE	THB.389.E3EU	Panel plug connector	2+PE	Stecker
TH389U M25 Gehäusesteckverbinder 3+PE polig Panel plug connector Stecker 3+PE	THB.389.E4EU	Panel plug connector	3+PE	Stecker
TH389U M25 Gehäusekupplung self-lock 2+PE polig Panel socket connector Buchse 2+PE	THB.389.F3CU	Panel socket connector	2+PE	Buchse
TH389U M25 Gehäusekupplung 2+PE polig Panel socket connector Buchse 2+PE	THB.389.F3EU	Panel socket connector	2+PE	Buchse
TH389U M25 Gehäusekupplung self-lock 3+PE polig Panel socket connector Buchse 3+PE	THB.389.F4CU	Panel socket connector	3+PE	Buchse
TH389U M25 Gehäusekupplung 3+PE polig Panel socket connector Buchse 3+PE	THB.389.F4EU	Panel socket connector	3+PE	Buchse

Matching counterpart

TH389U

TH389U-Cable

Cable plug mates with panel socket, cable socket with panel plug — matching pole count.

6 variants

Description

The panel-mounted versions of the TH389U series with M25 gland sit in the enclosure wall and accept the matching cable connector from outside. They are rated for 25 A at 630 V AC, with conductor cross-sections from 0.5 to 2.5 mm² — stranded or solid.

Versions

Available as panel plug connector and panel socket connector, each with 2+PE and 3+PE poles. The socket connector also comes as a self-lock version: it latches automatically when mated and can only be released with a tool — useful wherever a connection must not come apart accidentally during operation.

Supplied with a mounting nut; maximum panel thickness is 7 mm. Connection is by screw terminal at 0.8 Nm; strip 6 mm of conductor and 25 mm of sheath. M25 is the largest of the three panel sizes; electrically M16, M20 and M25 are identical.

Protection and materials

Protection rating is IP66 and IP68, impact resistance IK08. The housing is glass-fibre reinforced PA66 to UL94 V0, the gland PA66 to UL94 V2, the contacts brass. The temperature range runs from −40 to +125 °C with a maximum operating temperature of +70 °C. Tested to EN 61535, with CE and UKCA marking. The seals are silicone.

You will find the matching counterpart among the cable-mounted versions of the series. We assemble other configurations to order. Get in touch.