Siemens 3TK2827-1BB40 – SIRIUS Safety Relay, In Stock
Buy the Siemens 3TK2827-1BB40, a SIRIUS safety relay with relay release circuits for EMERGENCY-STOP units, 24 V DC coil, 45 mm width. Rated up to SIL3/PL e, this basic device is in stock and ready for fast shipping. Get a quote today.
Key Technical Specifications
- Product Type: SIRIUS safety relay with relay release circuits (RC)
- Control Supply Voltage: DC 24 V
- Width: 44.8 mm
- Height / Depth: 138.5 mm / 120 mm
- Terminal Type: Screw terminals (plug-in socket)
- Release Circuit Instantaneous: 2 NO
- Release Circuit Delayed: 2 NO, 0.5…30 s adjustable OFF-delay
- Signaling Contact: 1 NC (monitored start)
- Switching Capacity: 5 A at 24 V DC-13; 5 A at 115/230 V AC-15
- Electrical Endurance: 100,000 switching cycles
- Mechanical Service Life: 10,000,000 switching cycles
- Protection Rating (Housing / Terminals): IP20 / IP20
- Operating Temperature: -25 °C … +60 °C
- Safety Integrity Level: SIL3 (SIL2 for delayed release circuit) per IEC 61508
- Performance Level: PL e (PL d for delayed release circuit) per EN ISO 13849-1
- Category: 4 per EN ISO 13849-1
- Approvals: UL, CSA, TÜV, BG BIA certified
Design and Performance
Reliable Emergency-Stop Monitoring
Designed specifically for EMERGENCY-STOP units, the relay monitors floating safety sensors, position switches, EMERGENCY-OFF circuits, and pressure-sensitive mats, with a monitored start function and finger-safe protection against electrical shock.
Instantaneous and Time-Delayed Outputs
The device combines 2 instantaneous NO safety contacts with 2 time-delayed NO contacts (adjustable 0.5 to 30 seconds), supporting Stop Category 0 + 1 applications per DIN EN 60204-1.
High Safety Integrity for Critical Applications
Certified to SIL3 and Performance Level e for the instantaneous release circuit, the 3TK2827-1BB40 supports Category 4 safety architectures with cross-circuit-proof, single- or two-channel sensor wiring.
Rugged Industrial Design
Rated for vibration resistance to IEC 60068-2-6 and shock resistance of 8g/10ms, with a 4,000 V surge voltage rating and -25 °C to +60 °C operating range for demanding industrial environments.
Space-Saving, Flexible Installation
A compact 44.8 mm housing width with screw-and-snap-on mounting and plug-in socket terminals simplifies panel installation and wiring in control cabinets.
Why Buy the 3TK2827-1BB40 From Us
- In stock and ready for immediate dispatch
- Fast shipping on every order
- Commercial advisory support to help you confirm the right SIRIUS safety configuration
- Competitive pricing — get a quote in minutes
