| Contact module with 2 contact elements, 2 NC, screw terminal, for front plate mounting |
| Product brand name | SIRIUS ACT |
| Product designation | Contact module |
| Product type designation | 3SU1 |
| General technical data |
| Product function | |
| positive opening | Yes |
| Insulation voltage | |
| rated value | 500 V |
| Degree of pollution | 3 |
| Type of voltage | |
| of the operating voltage | AC/DC |
| of the input voltage | AC/DC |
| Surge voltage resistance rated value | 6 kV |
| Protection class IP | |
| of the enclosure | IP40 |
| of the terminal | IP20 |
| Shock resistance | |
| acc. to IEC 60068-2-27 | Sinusoidal half-wave 50 g / 11 ms |
| for railway applications acc. to DIN EN 61373 | Category 1, Class B |
| Operating frequency maximum | 3 600 1/h |
| Mechanical service life (switching cycles) | |
| typical | 10 000 000 |
| Electrical endurance (switching cycles) | |
| typical | 10 000 000 |
| Thermal current | 10 A |
| Reference code acc. to DIN EN 81346-2 | S |
| Reference code acc. to DIN EN 61346-2 | S |
| Continuous current of the C characteristic MCB | 10 A |
| Operating voltage | |
| at AC | |
| — at 50 Hz rated value | 5 ... 500 V |
| — at 60 Hz rated value | 5 ... 500 V |
| at DC | |
| — rated value | 5 ... 500 V |
| Power Electronics |
| Contact reliability | One maloperation per 100 million (17 V, 5 mA), one maloperation per 10 million (5 V, 1 mA) |
| Auxiliary circuit |
| Design of the contact of auxiliary contacts | Silver alloy |
| Number of NC contacts for auxiliary contacts | 2 |
| lagging switching | 0 |
| Number of NO contacts for auxiliary contacts | 0 |
| leading contact | 0 |
| Number of CO contacts | |
| for auxiliary contacts | 0 |
| Operating current at AC-12 | |
| at 24 V rated value | 10 A |
| at 48 V rated value | 10 A |
| at 110 V rated value | 10 A |
| at 230 V rated value | 8 A |
| at 400 V rated value | 8 A |
| Operating current at AC-15 | |
| at 24 V rated value | 6 A |
| at 48 V rated value | 6 A |
| at 110 V rated value | 6 A |
| at 230 V rated value | 6 A |
| at 400 V rated value | 3 A |
| at 500 V rated value | 1.4 A |
| Operating current at DC-12 | |
| at 24 V rated value | 10 A |
| at 48 V rated value | 5 A |
| at 110 V rated value | 2.5 A |
| at 230 V rated value | 1 A |
| at 400 V rated value | 0.3 A |
| at 500 V rated value | 0.3 A |
| Operating current at DC-13 | |
| at 24 V rated value | 3 A |
| at 48 V rated value | 1.5 A |
| at 110 V rated value | 0.7 A |
| at 230 V rated value | 0.3 A |
| at 400 V rated value | 0.1 A |
| at 500 V rated value | 0.1 A |
| Connections/Terminals |
| Type of electrical connection | screw-type terminals |
| Type of connectable conductor cross-sections | |
| solid with core end processing | 2x (0.5 ... 0.75 mm²) |
| solid without core end processing | 2x (1.0 ... 1.5 mm²) |
| finely stranded with core end processing | 2x (0.5 ... 1.5 mm²) |
| finely stranded without core end processing | 2x (1,0 ... 1,5 mm²) |
| at AWG conductors | 2x (18 ... 14) |
| Tightening torque | |
| with screw-type terminals | 0.8 ... 0.9 N·m |
| Ambient conditions |
| Ambient temperature | |
| during operation | -25 ... +70 °C |
| during storage | -40 ... +80 °C |
| Environmental category during operation acc. to IEC 60721 | 3M6, 3S2, 3B2, 3C3 (without salt spray), 3K6 (with relative humidity of 10 ... 95%, no condensation in operation permitted) |
| Installation/ mounting/ dimensions |
| Mounting type | |
| of modules and accessories | Front plate mounting |
| Height | 34 mm |
| Width | 9.8 mm |
| Depth | 49.7 mm |
