断电制动器剎車器是使用於當電力突然消失時，用來停止或保持負載。 安全剎車是利用數條彈簧來供應剎車力，此型號為信賴性非常高的剎車，典型應用在機械手臂、Z軸滾珠螺桿、伺服馬達及一般電動馬達的保持剎車。

作動原理
為負作動(無激磁作動)的電磁剎車器，其構造是以盤管發條將制動片壓住，利用其摩擦力來產生制動扭力。激磁盤管通電時，壓住制動片的電樞會將盤管發條加以壓縮，而被勵磁鐵心吸引，剎車器就呈解放狀態。切斷激磁電流的話，盤管發條的發條壓力會使電樞壓住制動片，剎車器就會作動。

断电制动器部分型号参考:ALS0S1AA,ALS0S2AA,ALS0S2AA,ALS0S2AM,ALS0S2AK,ALS0S2AK,

ALS0S2AP,ALS0S2AV,ALS0S2AW,ALS0S2BF,ALS0S2BW,ALS0S2BX

ALS0S4AH,ALS0S4AV,ALS0S4BE,ALS0S6AA,ALS0S8AB,ALS1S6AA,

ALS1S6AD,ALSS013B,ALSS04AA,T070929,ALS001AA,ALY001AA,

ALY001MA,ALY0S2AA,ALY0S2AR,ALY0S3AA,ALY0S3AF,ALY0S3BL,

ALY0S4AA,ALY0S4AH,ALY0S4AW,ALY0S4BJ,ALY0S4MA,ALY0S4M,

ALY0S6AA,ALY0S6AC,ALY0S6AC,ALY0S6AH,ALY0S6AN,ALY1S2AA,ALY1S2AB,ALY1S2AC,ACY001AC