Siemens 3SK1111-1AB30 SIRIUS Safety Relay Basic Unit 24V AC/DC
Siemens 3SK1111-1AB30 SIRIUS Safety Relay Basic Unit 24V AC/DC
Manufacturer: Siemens
Product No.: 3SK1111-1AB30
Condition:1000 in stock
Product Type: Safety Relay
Product Origin: 4011209746534
Payment: T/T, Western Union
Weight: 265g
Shipping port: Xiamen
Warranty: 12 months
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Siemens 3SK1111-1AB30 SIRIUS Safety Relay Basic Unit
The Siemens 3SK1111-1AB30 represents a fundamental solution in machine safety control, delivering reliable protection for personnel and equipment through proven safety relay technology. This basic unit operates on 24V AC/DC supply voltage and provides 3 normally open (NO) plus 1 normally closed (NC) safety-rated output contacts for comprehensive safety circuit integration.
Technical Specifications
- Model Number: 3SK1111-1AB30
- Supply Voltage: 24V AC/DC (±20% tolerance)
- Safety Contacts: 3 NO + 1 NC (force-guided)
- Contact Rating: 6A at 250V AC (resistive load)
- Response Time: ≤30ms typical
- Safety Category: Up to Category 4 / PLe per ISO 13849-1
- Operating Temperature: -25°C to +60°C
- Mounting: 35mm DIN rail (standard)
- Dimensions: 22.5mm width × 99mm height × 114.5mm depth
- Certifications: CE, cULus, TÜV certified
Application Scenarios
This safety relay excels in diverse industrial environments where personnel protection is paramount. Deploy the 3SK1111-1AB30 for emergency stop button monitoring in packaging machinery, where immediate power disconnection prevents operator injury during jam clearance. Integrate with safety light curtains on automated assembly lines to halt robotic motion when the protective field is breached. The unit also serves safety gate interlocking on CNC machining centers, ensuring spindle rotation ceases before guard doors open.
Process industries utilize this relay for two-hand control stations on hydraulic presses, enforcing simultaneous button activation to keep operators' hands clear of danger zones. In material handling systems, pair it with pull-cord switches along conveyor runs for distributed emergency shutdown capability.
Engineering Solutions
The force-guided contact design ensures that if any normally closed contact welds shut, all normally open contacts cannot close—a critical fail-safe mechanism. Wire the relay's dual-channel input to monitor redundant safety sensor contacts, achieving higher safety integrity levels. The auxiliary NC contact enables series connection of multiple safety devices while maintaining diagnostic capability.
For complex safety architectures, cascade multiple 3SK1111 units to expand contact capacity without compromising response time. The 24V DC compatibility allows direct interfacing with modern PLC safety outputs, while AC operation suits retrofit applications in older control panels.
Frequently Asked Questions
Q: Can this relay monitor both emergency stop buttons and safety gates simultaneously?
A: Yes, connect the devices in series on the dual-channel input. However, you cannot distinguish which device triggered the stop without additional monitoring logic.
Q: What's the difference between this basic unit and expansion modules?
A: The 3SK1111-1AB30 is a standalone safety relay with integrated control logic. Expansion modules (3SK2 series) add extra contacts but require a base unit to function.
Q: Does it require manual reset after a safety event?
A: Yes, the relay features automatic reset prevention. After the safety circuit opens, you must cycle the reset input only after the hazard condition clears, preventing premature restart.
Q: Is special wiring required for the dual-channel inputs?
A: Use separate conductors for each channel and avoid common return paths. Cross-circuit faults between channels could compromise safety integrity. Refer to wiring diagram in the manual for compliant installation.
Warranty & Support
Every Siemens 3SK1111-1AB30 safety relay includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team assists with application engineering, wiring validation, and troubleshooting throughout the product lifecycle. Replacement units ship within 24-48 hours to minimize downtime in critical safety systems.
Related Safety Control Products
| Product | Description | Link |
|---|---|---|
| Siemens 3TK2821-2CB30 | SIRIUS safety relay with extended contact configuration | View Product |
| Siemens 3RP1505-1AP30 | Multifunction timing relay for delayed safety functions | View Product |
| Siemens 3RN2010-1BW30 | Thermistor motor protection relay for thermal overload monitoring | View Product |
© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191
Product Description
Siemens 3SK1111-1AB30 SIRIUS Safety Relay Basic Unit
The Siemens 3SK1111-1AB30 represents a fundamental solution in machine safety control, delivering reliable protection for personnel and equipment through proven safety relay technology. This basic unit operates on 24V AC/DC supply voltage and provides 3 normally open (NO) plus 1 normally closed (NC) safety-rated output contacts for comprehensive safety circuit integration.
Technical Specifications
- Model Number: 3SK1111-1AB30
- Supply Voltage: 24V AC/DC (±20% tolerance)
- Safety Contacts: 3 NO + 1 NC (force-guided)
- Contact Rating: 6A at 250V AC (resistive load)
- Response Time: ≤30ms typical
- Safety Category: Up to Category 4 / PLe per ISO 13849-1
- Operating Temperature: -25°C to +60°C
- Mounting: 35mm DIN rail (standard)
- Dimensions: 22.5mm width × 99mm height × 114.5mm depth
- Certifications: CE, cULus, TÜV certified
Application Scenarios
This safety relay excels in diverse industrial environments where personnel protection is paramount. Deploy the 3SK1111-1AB30 for emergency stop button monitoring in packaging machinery, where immediate power disconnection prevents operator injury during jam clearance. Integrate with safety light curtains on automated assembly lines to halt robotic motion when the protective field is breached. The unit also serves safety gate interlocking on CNC machining centers, ensuring spindle rotation ceases before guard doors open.
Process industries utilize this relay for two-hand control stations on hydraulic presses, enforcing simultaneous button activation to keep operators' hands clear of danger zones. In material handling systems, pair it with pull-cord switches along conveyor runs for distributed emergency shutdown capability.
Engineering Solutions
The force-guided contact design ensures that if any normally closed contact welds shut, all normally open contacts cannot close—a critical fail-safe mechanism. Wire the relay's dual-channel input to monitor redundant safety sensor contacts, achieving higher safety integrity levels. The auxiliary NC contact enables series connection of multiple safety devices while maintaining diagnostic capability.
For complex safety architectures, cascade multiple 3SK1111 units to expand contact capacity without compromising response time. The 24V DC compatibility allows direct interfacing with modern PLC safety outputs, while AC operation suits retrofit applications in older control panels.
Frequently Asked Questions
Q: Can this relay monitor both emergency stop buttons and safety gates simultaneously?
A: Yes, connect the devices in series on the dual-channel input. However, you cannot distinguish which device triggered the stop without additional monitoring logic.
Q: What's the difference between this basic unit and expansion modules?
A: The 3SK1111-1AB30 is a standalone safety relay with integrated control logic. Expansion modules (3SK2 series) add extra contacts but require a base unit to function.
Q: Does it require manual reset after a safety event?
A: Yes, the relay features automatic reset prevention. After the safety circuit opens, you must cycle the reset input only after the hazard condition clears, preventing premature restart.
Q: Is special wiring required for the dual-channel inputs?
A: Use separate conductors for each channel and avoid common return paths. Cross-circuit faults between channels could compromise safety integrity. Refer to wiring diagram in the manual for compliant installation.
Warranty & Support
Every Siemens 3SK1111-1AB30 safety relay includes a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team assists with application engineering, wiring validation, and troubleshooting throughout the product lifecycle. Replacement units ship within 24-48 hours to minimize downtime in critical safety systems.
Related Safety Control Products
| Product | Description | Link |
|---|---|---|
| Siemens 3TK2821-2CB30 | SIRIUS safety relay with extended contact configuration | View Product |
| Siemens 3RP1505-1AP30 | Multifunction timing relay for delayed safety functions | View Product |
| Siemens 3RN2010-1BW30 | Thermistor motor protection relay for thermal overload monitoring | View Product |
© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191