Schneider Electric LUB12 TeSys U Starter-Controller Power Base 12 A 3P Non-Reversing Motor Starter Module

The Schneider Electric LUB12 is a TeSys U non-reversing power base rated 12 A at up to 440 V AC, forming the power-contact stage of a modular motor starter-controller. Fitted with a padlockable rotary handle and blanking shutters, it accepts a plug-in LUCA, LUCB, or LUCL control unit to complete protection for 3-phase motors up to 5.5 kW at 400 V.

Technical Specifications

Certifications & Standards

• CE
• UL
• CSA
• CCC
• EAC
• IEC 60947-6-2
• UL 60947-4-1
• CSA C22.2 No 60947-4-1

Selection Notes

The LUB12 covers motor loads up to 5.5 kW at 400 V and carries the same 50 kA breaking capacity at 440 V as the larger LUB32 base, so there is no fault-coordination penalty for choosing the lower current size when the load fits. Pair it with a control unit whose adjustment range brackets the motor's full-load current rather than the base's 12 A thermal rating, since the base itself sets no overload threshold. Move up to the LUB32 or LUB38 base once the motor's rated current exceeds 12 A.