3SK1211-1BW20 | Siemens
Safety relays, 4 Form A (N/O) (safety-related instantaneous switching) + 1 Form B (N/C) for feedback loop (instantaneous switching), 110 to 240 V AC/DC, 3SK1211-1BW20
3SK12111BW20, Siemens
SIRIUS safety relay Output expansion 4RO with relay enabling circuits 4 NO contacts plus Relay signaling circuit 1 NC contact Us = 110-240 V AC/DC screw terminal Output expansion SIRIUS 3SK1 for safety relays. The 3SK output expansions are used for supplementing basic units with additional safe outputs with a switching capacity of up to 10 A. They can be connected to each 3SK basic unit by wiring. All devices with a 24 V DC control supply voltage can also be connected to the 3SK1 and 3SK2 Advanced basic units using 3ZY12 device connectors. The devices have four (AC-15 5 A) or three (AC-15 10 A) fail-safe outputs. There is a choice between a control supply voltageof 24 V or a wide voltage range. Available with screw or spring-type terminals (push-in) across the board. The 3SK safety relays are replacing the proven 3TK28 series. Safety is a SIRIUS business.
| Version | safety relays | |
| Width | 22.5 mm | |
| Input voltage AC | 110 to 240 V AC/DC | |
| Height | 100 mm | |
| Contact type | 4 Form A (N/O) (safety-related instantaneous switching) + 1 Form B (N/C) for feedback loop (instantaneous switching) | |
| Assembly | latching/threading | |
| Depth | 121.6 mm | |
| Type of Use | output extension |
| Country of origin | DE |
| Customs tariff number | 85364900 |
| RoHS conform | Yes |
| Date of RoHS guidelines | 3/31/15 |
| SVHC free | No |
| Substance description | Lead, lead monoxide (lead oxide), 4,4'-isopropylidenediphenol |
