| Manufacturer part number (MPN) | 3SU1851-0NB00-2AC2 |
| EAN / GTIN | 4011209969322 |
| Sales unit | pcs |
| Product brand name | SIRIUS ACT |
| Product designation | Enclosures |
| Product type designation | 3SU1 |
| Equipment of commanding and signaling device | A = EMERGENCY STOP mushroom pushbutton, 40 mm, with positive latching acc. to ISO 13850 and rotate-to-unlatch mechanism |
| Design of the housing | with protective collar |
| Shape of the enclosure front | Square |
| Material of the enclosure | metal |
| Number of command points | 1 |
| Product component — EMERGENCY STOP device | Yes |
| Product component — protective collar | No |
| Color of the enclosure top part | yellow |
| Delivery state — as a kit | No |
| Delivery state — pre-wired on strip terminal | No |
| Fastening method of the enclosure | Vertical |
| Design of the actuating element | EMERGENCY STOP mushroom pushbutton |
| Suitability for use EMERGENCY OFF switch | Yes |
| Color of the actuating element | red |
| Material of the actuating element | plastic |
| Shape of the actuating element | round |
| Number of contact modules | 2 |
| Type of unlocking device | A = rotate-to-unlatch mechanism |
| Design of the front ring | Standard |
| Material of the holder | Plastic |
| Number of LED modules | 0 |
| Protection class IP | IP66, IP67, IP69(IP69K) |
| Degree of protection NEMA rating | 1, 2, 3, 3R, 4, 4X, 12, 13 |
| Shock resistance — according to IEC 60068-2-27 | sinusoidal half-wave 15 g / 11 ms |
| Vibration resistance — according to IEC 60068-2-6 | 10 ... 500 Hz: 5 g |
| Reference code according to IEC 81346-2 | S |
| Continuous current of the C characteristic MCB | 10 A; for a short-circuit current smaller than 400 A |
| Continuous current of the quick DIAZED fuse link | 10 A |
| Continuous current of the DIAZED fuse link gG | 10 A |
| At AC — at 50 Hz rated value | 5 ... 500 V |
| At AC — at 60 Hz rated value | 5 ... 500 V |
| At AC — at DC rated value | 5 ... 500 V |
| Design of the interface for communication | without |
| Design of the contact of auxiliary contacts | Silver alloy |
| Number of NC contacts for auxiliary contacts | 2 |
| Number of NO contacts for auxiliary contacts | 0 |
| Type of electrical connection of modules and accessories | Screw-type terminal |
| Type of electrical connection on enclosure | Cable routing above and below, both 1 x M20 |
| Tightening torque of the screws in the bracket | 1 ... 1.2 N·m |
| Tightening torque of fixing screws in the enclosure cover | 1.5 ... 1.7 N·m |
| Tightening torque with screw-type terminals | 0.8 ... 0.9 N·m |
| Proportion of dangerous failures — with low demand rate according to SN 31920 | 20 % |
| Proportion of dangerous failures — with high demand rate per NC contact according to SN 31920 | 20 % |
| B10 value with high demand rate according to SN 31920 | 100 000 |
| Failure rate [FIT] with low demand rate per NC contact according to SN 31920 | 100 FIT |
| Device type according to ISO 13849-1 | 3 |
| Safety device type according to IEC 61508-2 | Type A |
| T1 value for proof test interval or service life according to IEC 61508 | 20 a |
| Ambient temperature — during operation | -25 ... +70 °C |
| Ambient temperature — during storage | -40 ... +80 °C |
| Fastening method of modules and accessories | Floor mounting |
| Installation/ mounting/ dimensions — height | 89.4 mm |
| Installation/ mounting/ dimensions — width | 85 mm |
| Installation/ mounting/ dimensions — depth | 112.5 mm |
| Shape of the installation opening | round |
| Number of labels | 0 |
| Number of inscription plates | 0 |
| Number of contacts as normally closed contact | 2 |
| Degree of protection (IP) | IP67/IP69K |
| Country of origin | Germany |