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Home > Products > SIRIUS safety relay Basic unit Standard series-3SK1112-1BB40
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SIRIUS safety relay Basic unit Standard series-3SK1112-1BB40
Siemens

SIRIUS safety relay Basic unit Standard series-3SK1112-1BB40

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Best Price (Excl. GST):
₹ 44,705 / nos MRP: ₹44,705 / nos
GST (18%): ₹8,047
Total Price (Incl. GST): ₹52,752
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Product Description

Siemens 3SK1112-1BB40 – SIRIUS Safety Relay (Basic Unit)

The Siemens 3SK1112-1BB40 is a SIRIUS 3SK1 standard safety relay designed for machine safety applications such as emergency stop circuits, safety gate monitoring, and protective device control in industrial automation systems.

It ensures that hazardous machine operations are safely stopped when a fault or emergency condition occurs, helping meet modern functional safety standards.

Key Features

• Siemens SIRIUS 3SK1 safety relay
• Part Number: 3SK1112-1BB40
• Supply voltage: 24V DC
• 2 safety enabling outputs (NO contacts)
• 1 auxiliary signaling output
• Dual-channel input monitoring
• Cross-circuit detection capability
• DIN rail mounting (compact 22.5 mm design)
• Screw terminal connection
• Suitable for Category 4 / PL e safety circuits (system dependent)
• LED status indication for diagnostics
• High reliability for industrial safety systems
• Complies with safety standards such as ISO 13849-1 and IEC 61508

Technical Specifications

ParameterSpecification
Product SeriesSiemens SIRIUS 3SK1
Part Number3SK1112-1BB40
Product TypeSafety Relay (Basic Unit)
Supply Voltage24V DC
Safety Outputs2 × NO
Auxiliary Output1 × NC / signaling output
Input TypeDual-channel safety inputs
Mounting TypeDIN rail
Width22.5 mm
FunctionE-stop / safety gate / safety switch monitoring
Safety LevelUp to PL e / Category 4 (system dependent)
StandardsISO 13849-1, IEC 62061, IEC 61508

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