| | | | | |

SCHURTER: UMT-H Surface Mount Fuse Is Petite and Powerful up to 50 A


March 12, 2021

SCHURTER’s prominent UMT-H surface mount ceramic fuse family now includes 40 A and 50 A current ratings with an impressive breaking capacity rating of 500 A at 125 VAC / 72 VDC. The series provides unprecedented overcurrent and short circuit protection performance in a package size of 5.3 x 16 mm.

The UMT-H was originally developed to provide a smaller alternative to through-hole mounted 5 x 20 mm cartridge fuses, commonly used for primary circuit protection. The range has since grown to include 26 rated currents from 160 mA to 50 A. Rated voltage is maximum 277 VAC / 250 VDC, with a remarkable interrupt capacity rating of 1500 A for current ratings up to 6.3 A. The Time-Lag T characteristic of the UMT-H withstands high inrush and pulse currents. Its 277 VAC rating is intended for use in circuits using one of 3-phase wiring schemes (480Vac ÷√3=277Vac), common to commercial and industrial lighting in the U.S.

The UMT-H series has evolved to include higher current ratings to meet new markets for secondary protection in battery-powered applications. Areas of application are widespread, from motors to newer emerging applications such as those reliant on energy accumulators and everything in between. The UMT-H is an all-around ideal solution for many applications in energy, data, medical, industrial control and automotive to name a few. It is also impermeable to conformal coatings, and thus a good candidate for use in ATEx and IECEx rated devices for hazardous environments.

A variety of breaking capacity measurements are performed on the UMT-H at specific solder trace widths. The information is provided on the datasheet to help guide in accurate selection and circuit installation. The admissible ambient temperature range is -55°C to 125°C. Large solder pads ensure optimal heat dissipation. The fuse is available in 100-piece quantities loose, or 1500-piece reels for automated pick and place.

The UMT-H is designed according to IEC 60127-7 and UL 248-14 and carries VDE and cURus approvals. IEC and MIL-STD 202 tests apply. Pricing starts at about $1.30 each per reel of 1500 pieces.



Check Availability


Related Articles

Network Infrastructure Featured Product Spotlight

PBUS 14 Panduit logo 400

This webinar presented by Beth Lessard and Keith Cordero will be highlighting three Panduit solutions that will optimize network equipment and cabling to ensure that your spaces are efficiently and properly managed to support ever-evolving business needs of today and beyond. Products that will be featured include PanZone TrueEdge Wall Mount Enclsoure, Cable Managers, and Adjustable Depth 4-Post Rack.


Editor’s Pick: Featured Product News

Siemens: SIMOVAC Non-Arc-Resistant and SIMOVAC-AR Arc-Resistant Motor Controllers

The Siemens SIMOVAC medium-voltage non-arc-resistant and SIMOVAC-AR arc-resistant controllers have a modular design incorporating up to two 12SVC400 (400 A) controllers, housed in a freestanding sheet steel enclosure. Each controller is UL 347 class E2, equipped with three current-limiting fuses, a non-load-break isolating switch, and a fixed-mounted vacuum contactor (plug-in type optional for 12SVC400). The enclosure is designed for front access, allowing the equipment to be located with the rear of the equipment close to a non-combustible wall.

Read More

Sponsored Content
Electrify Your Enterprise

Power is vital to production, and well-designed control cabinets are key. Allied Electronics & Automation offers a comprehensive collection of control cabinet solutions including PLCs, HMIs, contactors, miniature circuit breakers, terminal block connectors, DIN-rail power supplies, pushbutton switches, motor starters, overloads, power relays, industrial Ethernet switches and AC drives engineered to keep your operations running safely, reliably and efficiently.

Learn more HERE.

Products for Panel Builders

  • AutomationDirect: C-more CM5-RHMI Headless HMI

    AutomationDirect: C-more CM5-RHMI Headless HMI

    AutomationDirect has added the CM5-RHMI headless HMI which has all the powerful functionality of the C-more CM5 touch panel HMIs but without display size restrictions. This HDMI-enabled device works with televisions, monitors, projectors, and most any other HDMI display device of any size to display real-time operational data or messages. Or skip the local display… Read More…

  • Eaton: Arc Flash Relay

    Eaton: Arc Flash Relay

    Eaton’s Arc Flash Relay (EAFR) provides reportedly unmatched switchgear protection. This relay reduces arc flash energy by quickly clearing the current feeding the arc. The sensitive light inputs with current permissive detection identify low power phase to ground arc faults. The EAFR works to prevent faults in medium and low-voltage switchgear, and the factory-installed Arc… Read More…