ALSTOM MMLB01 Multi‑Finger Test Plug

Technical Specifications

Model：MMLB01

Brand：ALSTOM

Product Type：Multi‑finger test plug

Applicable System：MMLG test block,MiCOM series protection relay secondary circuit

Socket Quantity：28‑way 4mm shrouded test socket

Fixing Method：Two knurled locking screws

Accessory：6 pieces CT shorting link

Insulation Voltage：2000V AC dielectric withstand

Working Temperature：‑20℃ ~ +55℃

Storage Temperature：‑40℃ ~ +70℃

Mounting：Plug‑in fit onto MMLG test block

Weight：0.45kg

Product Brief:

MMLB01 is legacy multi‑finger test plug designed for ALSTOM MMLG test block,widely applied in substation protection relay secondary‑circuit maintenance. It safely inserts into MMLG test block sockets and locks with two knurled screws. It provides 28‑way 4mm shrouded test sockets for external test instrument connection. Supplied CT shorting links can realize current transformer short‑circuit to avoid open‑circuit risk during relay commissioning and maintenance. It supports no‑disturbance signal injection,voltage measurement and secondary‑circuit inspection for protection devices. This is EOL discontinued spare part for power substation renovation and maintenance. Please confirm matching with MMLG test block before purchase. Strict anti‑static operation shall be followed during using.