Description

Littelfuse PSR series high-speed square body fuses are

specially designed for protection of power semiconductor

devices such as diodes, triacs, IGBTs, SCRs, MOSFETs,

and other solid-state devices that are typically designed

into power conversion and power conditioning equipment.

Variable frequency drives, inverters, UPS, rectifiers, and

soft-starters are examples of typical equipment designed

with sensitive power semiconductor devices that cannot

withstand any line surge or overcurrent conditions and

require high-speed protection.

The PSR series with bolted blades is designed and tested

to IEC 60269-4.

Littelfuse POWR-SPEED? PSR series products offer

optimized circuit protection at the extremely fast speed

required to protect modern day power conversion devices.

Available in bolted blade style termination (typical in North

American market) with visual blown fuse indication standard

on all fuses and optional micro-switch for external indication.

Features/Benefits

 Best in class dc performance  Extremely current limiting

 Superior cycling capability

 Visual and optional microswitch fuse blown indication

 Low watt-loss design

 Compliance with US and Canadian requirements

 Fast-acting Class aR performance

Applications

 Power conversion devices (UPS, inverter,

rectifiers, drives)  Dc systems (dc common bus, dc injection braking)

 Battery protection application (energy storage systems)

 Electric vehicle charging stations

 Heaters and power supplies

Specifications

Voltage Rating Ac: 450 V–1300 V

Dc: 450 V–1000 V

Amperage Rating 40 A–2250 A

Interrupting Rating Ac: 100 kA–200 kA

Dc: 150 kA

Time Constant 10 ms at IR

Microswitch Yes

Mounting Bolted blade style

Material Body: ceramic

Contacts: plated copper

Approvals UL 248-13 Recognized (File: E71611)

cURus (File: E71611)

Environmental RoHS Compliant, REACH

Operating Temperature -55 °C to +125 °C

Storage Temperature Up to +35 °C with relative humidity <65

Country of Origin Mexico

PSR070UL0250Z屬于電路保護(hù) > 電氣專用保險(xiǎn)絲。力特公司制造生產(chǎn)的PSR070UL0250Z電氣專用保險(xiǎn)絲該系列產(chǎn)品用于過電流故障保護(hù)，其作用是防止電流超過所需最大值而導(dǎo)致設(shè)備內(nèi)的導(dǎo)電元件損壞。這些保險(xiǎn)絲與普通保險(xiǎn)絲的區(qū)別在于以下幾個(gè)因素之一：具有 UL248 標(biāo)準(zhǔn)下的非輔助性分類、在危險(xiǎn)或爆炸性環(huán)境中使用的認(rèn)證，或輔助性設(shè)備保護(hù)產(chǎn)品中不常見的外形尺寸，如具有指示功能或可熔電纜鏈路的保險(xiǎn)絲和指定用于特定應(yīng)用（例如電信電路或萬用表的保護(hù)）的保險(xiǎn)絲。