Catalogue reference. Availability, exact specification and OEM or aftermarket supply are confirmed in your quotation.
3SK1121-1AB40 — SIRIUS Safety Relay (Advanced Basic Unit)
relayPart number: 3SK1121-1AB40
3SK1121-1AB40 — SIRIUS Safety Relay (Advanced Basic Unit) — Siemens part reference 3SK1121-1AB40. Request a destination-specific quotation with shipping included. Confirm equipment model, serial number, quantity and any required certificates; availability, exact supply specification and warranty terms are checked before ordering.
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Technical specifications
| Manufacturer | Siemens |
|---|---|
| Part number | 3SK1121-1AB40 |
| Category | Electrical & controls |
| Item Type Name | SIRIUS Safety Relay (Advanced Basic Unit) |
| Product Family / Series | SIRIUS 3SK1 Safety Relays |
| Series | Advanced |
| Mlfb Order Number | 3SK1121-1AB40 |
| Device Type | Base unit, advanced (instantaneous) |
| rated_control_supply_voltage | 24 V DC |
| enabling_contacts | 3 Form A (N/O), non-delayed switching |
| signaling_contacts | 1 Form B (N/C), non-delayed switching |
| auxiliary_contacts | 1 Break Contact (NC) |
| output_contacts_without_delay | 3 Make Contacts (NO) |
| termination_type | Screw terminal |
| response_time | 0.11 ms |
| service_life_electrical | 0.25 million cycles |
| service_life_mechanical | 10 million cycles |
| protection_rating | IP20 (housing) |
| mounting | Top hat (DIN) rail mounting |
| configurable_functions | Autostart/Monitored Start; Cross-fault detection ON/OFF; 2 single-channel or 1 double-channel sensor; Startup test yes/no |
| Operating Temperature | -25 to +60 °C |
| Dimensions | 22.5 x 100 x 121.6 mm (W x H x D) |
| Reference status | Published catalogue reference; confirm specification and fitment before ordering |
| Availability | On request |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
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