Description
NSR90-PR-EX Pull Rope Emergency Stop Switches are designed for shutting down a conveyor belt or machinery and assuring system safety in hazardous environments where explosions could occur. They are mounted alongside the conveyor belt, with tensioned steel cords attached to the switch. When the cable is pulled or the cable loses its tension, the switch will actuate and system will shut down. Then the switch can be reset manually with resetting lever.
The product is suitable for reliable long term usage in most industrial applications. Can be used in dusty and dirty due to its IP67 protection class. Enclosure is aluminum cast, shaft mechanism is stainless steel and the resetting lever is made of durable plastic. NSR90-PR-EX series products do not require any maintenance.
Cable span is 100 m in one or both ways (2 x 100 m when used both ways). All models can be equipped with an alarm switch and signal light so alarming switch can be spotted from distance. Standard product’s contact structure is 1NO+1NC. If requested, 2NO+2NC is available.
NSR90-PR-EX is Ex-Proof (ATEX certified). With its protection against dust ingress, it is reliable in explosive athmosphere. All models conform to CE (European Union) and EAC (Eurasian Customs Union) standards. Microswitches used in these products are VDE approved.
We recommend tested and approved KBT Connection Equipment for installation.
Technical Specifications
| Enclosure | Aluminum Casting |
| Cover | Stainless Steel |
| Micro Switch Rating | 240 V 3A |
| Output Signal | (2) SPDT Stop |
| Cable Gland | 3 x M16x1,5 |
| Temperature Rating | -30°C to +85°C |
| Rope Length | 1×100 and 2×100 metres |
| Contact Type | Snap-action |
| Mounting Bolts | 4 x M8 |
| Protection Class | IP67 |
| Enclosure Color | Black (RAL 9005) |
| Weight | 1.9 kg |
| Mounting Orientation | It is suitable for double-sided use. |
| Impact Rating | IK09 (EN 62262) |
| Warranty Period | 24 Months |
Safety Standards
| Electrical Safety | EN 60947-5-1 |
| Mechanical Safety | EN 60204 |
| Outdoor Safety | EN 60529 |
| Impact Resistance | EN 62262 |
| Certificates | CE,EAC |
| Micro switches are VDE approved. | |
Options
| Mounting Bracket |
| Signal Light and Alarm |
EX Definition
| II 2D Ex tb IIIC Db T85°C IP66/68 |
Model Specifications
| Model | Contact Structure | ||
| Description | Rope Length | ||
| NSR90-PR-22-EX | 2NC + 2NO | Double Sided + Reset With Button | 2 x 100 Metres |
| NSR90-PR-22K-EX | 2NC + 2NO | Double Sided + Reset With Key | 2 x 100 Metres |
| NSR90-PR-R22-EX | 2NC + 2NO | Single Side (Right) + Reset With Button | 1 x 100 Metres |
| NSR90-PR-RK22-EX | 2NC + 2NO | Single Side (Right) + Reset With Key | 1 x 100 Metres |
| NSR90-PR-L22-EX | 2NC + 2NO | Single Side (Left) + Reset With Button | 1 x 100 Metres |
| NSR90-PR-LK22-EX | 2NC + 2NO | Single Side (Left) + Reset With Key | 1 x 100 Metres |
| NSR90-PR-22-EX | 1NC + 1NO | Double Sided + Reset With Button | 2 x 100 Metres |
| NSR90-PR-22K-EX | 1NC + 1NO | Double Sided + Reset With Key | 2 x 100 Metres |
| NSR90-PR-R11-EX | 1NC + 1NO | Single Side (Right) + Reset With Button | 1 x 100 Metres |
| NSR90-PR-RK11-EX | 1NC + 1NO | Single Side (Right) + Reset With Key | 1 x 100 Metres |
| NSR90-PR-L11-EX | 1NC + 1NO | Single Side (Left) + Reset With Button | 1 x 100 Metres |
| NSR90-PR-LK11-EX | 1NC + 1NO | Single Side (Left) + Reset With Key | 1 x 100 Metres |
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