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Manual Motor Starters with Thermal-Magnetic Protection
Kripal manufactures manual motor starters that provide combined thermal overload and magnetic short-circuit protection in a single, compact, DIN rail-mounted device, eliminating the need for separate contactor and overload relay combinations. The UKS-M series covers a range from 0.1A to 80A with adjustable thermal trip settings to match motor full-load current and fixed magnetic trip for instantaneous short-circuit interruption. Rated for up to 690V AC insulation with high breaking capacity (up to 100kA for selected models), these starters are ideal for machine tool motors, pump panels, and OEM control circuits. The series also supports a full range of modular accessories, including auxiliary contacts, shunt releases, and undervoltage releases, offering flexible configuration for diverse industrial applications.
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UKS-M32 Motor Protection Circuit Breaker 0.1~32A 690V Current Adjustment Range 1.6-2.5A
UKS-M32 is a thermal-magnetic motor circuit breaker designed primarily for three-phase asynchronous motors.
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UKS-M80 Motor Protection Circuit Breaker 16~80A 690V Current Adjustment Range 56-80A
UKS-M32 provides reliable overload protection, short-circuit protection, and manual start-stop control.
Ask a QuoteManual Motor Starter Selection Guide for Standalone Drives
A manual motor starter functions as a consolidated electromechanical device integrating a disconnect switch, thermal overload relay, and instantaneous magnetic short-circuit protection. The KRIPAL UKS-M series provides direct, operator-controlled power switching and comprehensive fault protection for standalone industrial machinery.
Technical Specifications of the UKS-M Motor Starter Series
Operational Range: 0.1A to 80A
The UKS-M32 (0.1A – 32A) and UKS-M80 (16A – 80A) frame sizes accommodate a broad spectrum of small to medium asynchronous motors, covering precise low-current applications up to high-capacity drives.
Combined Thermal and Magnetic Architecture
Integrates precise bimetallic thermal overload sensing with instantaneous magnetic short-circuit tripping mechanisms, delivering dual-layer protection with high breaking capacity (up to 100kA) in a compact footprint.
Adjustable Trip Calibration
Features a tunable current setting dial designed to align directly with the specific motor nameplate Full Load Amperage (FLA), ensuring highly accurate thermal response curves.
690V Insulation Rating
Engineered and tested to sustain high operational voltages, making the switchgear suitable for integration across complex industrial motor distribution circuits.
Local Manual Control
Provides direct, user-friendly On/Off switching for local motor operation. This integrated capability simplifies circuit design in standalone applications by reducing the need for complex external control wiring in simple, direct-start configurations.
Standalone Motor Protection for Machine Tool and OEM Panels
KRIPAL UKS-M manual motor starters deliver standalone motor protection and local control without requiring a separate contactor and overload relay, serving machine tool builders, pump panel fabricators, and equipment OEMs who value compact, self-contained motor branch circuit solutions.
Lathe, Mill, and Grinder Motor Protection
UKS-M starters protect spindle and feed motors in machine tools where operators need local ON/OFF control at the machine. Combined thermal and magnetic trip elements handle both slow overload build-up and instantaneous short-circuit faults in a single DIN-rail device.
Building Services Pump and Fan Panels
Compact UKS-M units (0.1A to 80A) serve as the primary motor protection device in small pump control panels for HVAC chilled water circulation, boiler feed pumps, and cooling tower fan motors where panel real estate is limited and a full contactor-overload pair is unnecessary complexity.
OEM Woodworking and Packaging Machinery
Equipment manufacturers integrate UKS-M starters into table saws, planers, carton erectors, and stretch wrappers. The adjustable thermal trip dial allows commissioning engineers to fine-tune motor protection to the exact nameplate full-load current on-site, rather than stocking multiple fixed-range devices.
Simplify Your Equipment Motor Protection Sourcing
- Full Current Range in One Series: Source manual motor starters from 0.1A to 80A for your entire equipment product line from one manufacturer, simplifying BOM management and supplier qualification.
- Motor Protection Coordination: Our application engineers review your motor data and recommend the correct starter with trip setting ranges matched to each motor’s specific operating profile.
- OEM Volume Programs: Factory-direct pricing on equipment manufacturer production volumes with scheduled delivery coordination and safety stock programs.
Streamlined Supply for Equipment OEM Production
KRIPAL manufactures manual motor starters, contactors, and thermal overload relays in-house at our dedicated production facilities. This vertical integration offers OEMs a single, reliable supply chain for the entire motor protection hierarchy—ranging from compact manual starters for standalone machinery to high-performance contactor-overload combinations for complex, automated industrial systems.
Bimetal Strip Calibration Consistency
The bimetal strips that determine thermal trip characteristics are calibrated in-house. This ensures UKS-M starters trip at the same thermal curve as other relay components of equivalent range, simplifying your protection coordination design.
Magnetic Trip Instantaneous Verification
The short-circuit magnetic trip element on every production batch is verified at 10–14x the rated current to confirm instantaneous operation. Test data is archived per batch, supporting your equipment’s short-circuit protection compliance documentation.
Full-Range OEM Supply from One Manufacturer
Source manual motor starters from 0.1A to 80A alongside your contactors and overload relays on one purchase order. One quality audit covers your entire motor protection supply chain, reducing supplier qualification costs for new equipment platforms.
Machine Tool OEM Stock Buffer
For equipment manufacturers building to order, KRIPAL holds agreed inventory of your standard UKS-M current ratings and ships against your machine build schedule, ensuring components arrive just as each machine enters electrical assembly.
Accessory Integration: Auxiliary Contacts and Undervoltage Trips
UKS-M starters accept snap-on auxiliary contact modules and undervoltage release coils manufactured by KRIPAL. Single-source accessories eliminate the compatibility guesswork of mixing brands in your equipment panel.
CE and IEC Technical Files for Equipment Export
Documentation packages include trip characteristic curves, short-circuit breaking capacity test reports, and IEC 60947-4-1 compliance certificates, formatted for inclusion in your equipment technical file for CE marking.
Private Label with Trip Setting Range Marking
Your part number and current range can be laser-etched on the starter face, visible to the commissioning engineer adjusting the trip dial, while maintaining your branding integrity.
Direct OEM Application Support
Equipment design engineers communicate directly with KRIPAL’s motor protection team for starter selection, trip coordination with upstream circuit breakers, and DIN-rail mounting guidance, bypassing the delays of distributor-mediated technical inquiries.
Frequently Asked Questions
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Wondering what contactor ratings mean? Our guide explains contactor specifications like amp ratings, coil voltage, and poles. Learn how to read them correctly.
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