Reversing Contactors for Forward & Reverse Motor Control

Every UKR assembly undergoes a functional test verifying mechanical interlock engagement and electrical interlock contact sequencing before it leaves the factory. Your panel team mounts and connects three-phase power | the interlock logic is proven.

The interlock toggle that physically prevents both contactors from closing simultaneously is machined to 0.1mm tolerance in KRIPAL’s tool room. Off-the-shelf add-on mechanical interlocks from third parties do not guarantee this fit precision.

Reversing contactors face the harshest switching condition: plugging, where the motor is reversed against rotation. KRIPAL batch-tests sample assemblies under plugging duty cycles and archives the results, providing confidence that the contactor survives the application’s worst-case electrical stress.

For overhead crane modernization and new-build hoist projects, KRIPAL coordinates delivery of reversing contactors alongside UKH overload relays and pendant control station components as a consolidated crane control package.

KRIPAL stocks replacement mechanical interlock assemblies and coil kits for UKR contactors, supporting your customers’ maintenance teams who need fast spare parts without waiting for made-to-order production runs.

Reversing contactor technical documentation prepared for machinery directive conformity assessment, supporting your hoist or crane CE marking process with verified component compliance data.

Reversing assemblies shipped with your company’s wiring schematic printed on the enclosure label, your part numbers laser-marked, and branded packaging | KRIPAL remains invisible to your end customer.

Crane and hoist OEM engineers speak directly with KRIPAL application engineers who understand plugging duty, reversing frequency limits, and interlock sequencing requirements | not a generalist support agent.