Circuit Protection

Reliable and Safe Circuit Protection

SCHURTER's circuit protection portfolio includes fuse-links, fuseholders, varistors and circuit breakers for equipment in resettable and non-resettable versions. The portfolio includes a variety of sizes and features that covers systems for power supplies, medical, telecommunications, and intrinsically safe applications as well as 277 VAC industrial equipment.

Fuses and Fuseholders

Fuseholders

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Fuseholders - New Standard for Improved Fire Safety

SCHURTER is busy upgrading its fuseholders and appliance inlets with fuseholders portfolio to meet the new IEC/EN 60127-6 Edition 2.0 standard. New standard becomes effective October 2017 requiring all manufacturers to supply only compliant products.

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FUS Shock-Safe Fuseholder Designed for Harsh Environments

SCHURTER FUS series high performance fuseholder is rated 16 A @ 500 VAC according to IEC and up to 32 A @ 600 VAC/ VDC according to UL/CSA. Rated power acceptance is 4 W/16 A @ Ta 23°C and has an ingress protection rating of IP67. FUS series complies with IEC 60127-6 Edition 2.0 and IEC 60335-1 Edition 4.0 standards.

Fuseholders Product Page

SCHURTER fuses are available in various sizes and resettable and non-resettable versions as well as Time-Lag and Quick-Acting options. These fuses protect electric and electronic equipment against overcurrent damage and provide reliable interruption of short-circuits.

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For primary and secondary protection directly on the circuit board, SCHURTER offers a wide range of solutions. The series UMT-H, UMF 250 and UMT 250 offer compact as well as precise solutions, which are also pulse resistant. The range is complemented with UMZ 250 and UMK 250 fuses with preassembled clips and fuse links. The matching fuseholders are glow wire resistant and ideal for reflow soldering.

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SCHURTER's surface-mount chip fuses were specially developed to offer low-loss and precise overcurrent protection in secondary circuitry. These fuses set themselves apart from comparable products through their extremely precise opening times and minimal power dissipation.

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Universal Modular Fuses

Image of Universal Modular Fuses Fuse Series Rated Voltage Rated Current Breaking Capacity Dimensions
(mm)
 
UMF 250 250 VAC, 125 VDC 0.5 -
10 A
100 A -
200 A
10.1 x 3 UMF 250 Product Page
UMT 250 / 277 VAC 277/250 VAC, 125/250 VDC 0.08 A -
10 A
35 A -
200 A
10.1 x 3 UMT 250 Product Page
UMZ 250 Fuse with Clip 277/250 VAC, 125/250 VDC 0.08 A -
4 A
200 A 11.1 x 4.2 UMZ 250 Product Page
UMK 250 Fuse with Clip 250 VAC, 125 VDC 500 mA -
4 A
100 -
200 A
11.3 x 4.2 x 4 UMK 250 Product Page
UMT-H 277/250 VAC, 72/250 VDC 0.16 - 30 A 100 - 1500 A 5.3 x 16 UMT-H Product Page

6.3 x 32

Image of 6.3 x 32 Fuse Series Rated Voltage Rated Current Breaking Capacity Dimensions
(mm)
 
SHT SHT Product Page
SHF Cartridge Fuse 500 VAC, 63 VDC 1 -
8 A
1500 A -
20 kA
6.3 x 32 SHF Cartridge Fuse Product Page

Secondary Protection - Surface Mount Chip Fuses

Image of Secondary Protection Fuse Series Rated Voltage Rated Current Breaking Capacity Dimensions
(mm)
 
USF 0402 24 - 32 VDC 0.375 -
5 A
35 A 1.05 x 0.55 USF 0402 Product Page
USF 0603 32 VAC, 32 - 63 VDC 0.5 -
5 A
50 A 1.6 x 0.8 USF 0603 Product Page
USF 1206 32 - 125 VAC, 63 - 125 VDC 0.375 -
4 A
50 -
600 A
3.2 x 1.6 USF 1206 Product Page
USFF 1206 125 VAC, 63 VDC 0.05 -
0.25 A
100 A 3.2 x 1.6 USFF 1206 Product Page
USI 1206 32 VAC, 63 VDC 0.5 -
6.3 A
63 -
600 A
3.2 x 1.6 USI 1206 Product Page
UST 1206 32 VAC, 63 VDC 7 -
25 A
100 -
600 A
3.2 x 1.6 UST 1206 Product Page

Circuit Breakers

SCHURTER's circuit breakers are safe, highly reliable and easy to use. The extensive product portfolio includes one-, two-, and three-pole circuit breaker types to meet international safety standards as well as different actuation and mounting styles.

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The AS168X family of thermal magnetic high performance circuit breakers are UL 508 listed for use as a Manual Motor Controller for industrial control applications. The AS168X is available in 1 - 4 poles and is DIN Rail mountable for industrial applications.

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  Series # of Poles Method of Tripping Rated Current/Rated Voltage Endurance Interrupting Capacity
Image of T9 T9 1 Thermal 3-16 A @ 240 VAC 3-12 A @ 48 VDC; 12-16 A @ 32 VDC 6000 cycles @ 1.5x ln;
ln = 10 A - 16 A
8x ln / 2000 A
Image of T11 T11 1 Thermal 0.05 - 16 A @ 240 VAC, 48 VDC 1000 cycles @ 2x ln;
ln = 0.05 A
8x ln / 96 A
Image of TA35 TA35 1 or 2 Thermal Rocker Switch 0.05 A - 20 A @ 240 VAC / 32-60 VDC 50000 cycles at ln 6x ln (IEC) / 1.5x ln (UL)
Image of TA35 TA35 3 Thermal Rocker Switch 0.05 A - 12 A @ 415Y / 240 VAC 50000 cycles at ln 6x ln (IEC) / 1.5x ln (UL)
Image of TA45 TA45 2 Thermal Rocker Switch or Pushbutton Switch 0.05 A - 20 A @ 240 VAC / 60 VDC 50000 cycles at ln 10x ln / 300 A
Image of AS168X AS168X 1 Thermal Magnetic 0.5 A - 52 A @ 480 VAC / 65 VDC; 180 VDC 6000 cycles at ln 10 kA
Image of AS168X AS168X 2-4  Thermal Magnetic 0.5 A - 52 A @ 480 VAC / 65 VDC; 360 VDC 6000 cycles at ln 10 kA