![[MITSUBISHI ELECTRIC] — UT/UN-ML Mechanical Interlock Units](https://img.prosourcemro.com/2026/08/Mstn-photo-opt-ml-1.png)
Accessories
MITSUBISHI ELECTRIC
[MITSUBISHI ELECTRIC] — UT/UN-ML Mechanical Interlock Units
Family ID: MEL-OPT-ML
Mitsubishi Electric UT-ML and UN-ML mechanical interlock units mechanically prevent simultaneous closing of two magnetic contactors, forming reversing contactors and power-source transfer switches when combined with main circuit conductor kits (UT/UN-SD, UN-SG). UT-ML11/ML20(BC) contain two built-in b-contacts for electrical interlocking; other types require the contactor's auxiliary b-contacts for electrical interlock. UT-ML11BC has wiring-rationalized terminals. UL and CSA certified types available.
8 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| UT-ML11 | Mechanical interlock unit UT-ML11 | MITSUBISHI ELECTRIC | Applicable: S-T10, T12, T20 (AC) · Feature: 2 built-in b-contacts | ||
| UT-ML11BC | Mechanical interlock unit UT-ML11BC | MITSUBISHI ELECTRIC | Applicable: S-T10BC, T12BC, T20BC (AC) · Feature: 2 built-in b-contacts, BC terminals | ||
| UT-ML20 | Mechanical interlock unit UT-ML20 | MITSUBISHI ELECTRIC | Applicable: SD-T12, T20 (DC) · Feature: 2 built-in b-contacts | ||
| UT-ML20BC | Mechanical interlock unit UT-ML20BC | MITSUBISHI ELECTRIC | Applicable: SD-T12BC, T20BC (DC) · Feature: 2 built-in b-contacts, BC terminals | ||
| UN-ML21 | Mechanical interlock unit UN-ML21 | MITSUBISHI ELECTRIC | Applicable: S-T21 to T80 / SD-T21 to T80 / DU(D)-N30 / SL(D)-T21 to T80 · Feature: No built-in b-contact | ||
| UN-ML80 | Mechanical interlock unit UN-ML80 | MITSUBISHI ELECTRIC | Applicable: S-T100, S-N125, DU-N60 / SD equivalents / SL(D)-T100, N125 · Feature: No built-in b-contact | ||
| UN-ML150 | Mechanical interlock unit UN-ML150 | MITSUBISHI ELECTRIC | Applicable: S-N150, DU-N120 / SD-N150, DUD-N120 / SL(D)-N150 · Feature: No built-in b-contact | ||
| UN-ML220 | Mechanical interlock unit UN-ML220 | MITSUBISHI ELECTRIC | Applicable: S-N180 to N400, DU-N180, N260 / SD equivalents / SL(D)-N220 to N400 · Feature: No built-in b-contact |
