Specification Brand : STEPPERONLINE BulletPoint : Reland Sung BulletPoint1 : Non-excited brake and operate with 24VDC BulletPoint2 : Max 4Nm(566.4oz.in) static friction torque BulletPoint3 : The operating principle is: When the electric power is applied, the armature is pulled by the electromagnetic force in the magnet body assembly, which overcomes the spring action. This allows the friction disc to rotate freely. BulletPoint4 : When electrical power is interrupted, the electromagnetic force is removed and the pressure spring mechanically forces the armature plate to clamp the friction disc between itself and the pressure plate. This develops torque to hold the load. BulletPoint5 : A good choice for Nema 34 size stepper motor Color : Black CompatibleWithVehicleType : Truck ConnectivityProtocol : X-10 ConnectorType : Clamp ConnectorType1 : Clamp ConnectorType2 : screw CurrentRating : 3 amps ExteriorFinish : Alloy Steel ExternallyAssignedProductIdentifier : 7426956996960 ExternallyAssignedProductIdentifier1 : 0700828688137 ExternallyAssignedProductIdentifier2 : 700828688137 ItemName : STEPPERONLINE DC Electromagnetic Brake 24V 4.0Nm(566oz.in) for Nema 34 Stepper Motor ItemPackageDimensions_Height : 11.5 centimeters ItemPackageDimensions_Length : 15.4 centimeters ItemPackageDimensions_Width : 7.6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-controllers Manufacturer : STEPPERONLINE Material : stainless_steel ModelNumber : modle NumberOfItems : 1 PartNumber : SWB-05 PartTypeId : 1082 ProductDescription : Brake Specification