Overview
The STI 44505-0350 is a safety-rated limit switch from STI Guardmaster’s SL product family. This Type I-22 model features an AC15 contact rating, making it suitable for control circuits in industrial automation and machinery safety applications. The IP65 enclosure rating provides robust protection against dust and water ingress, while the 230V 3A electrical specification meets standard industrial control requirements.
Key Features
- Type I-22 design for reliable position sensing and interlocking
- AC15 contact rating per IEC 60947-4 standards for electromagnetic control devices
- IP65 protection rating ensures operation in harsh industrial environments
- 230V 3A electrical rating supports standard control circuit loads
- Surplus/used condition—fully functional and tested before shipment
- Direct replacement capability for equivalent STI SL series models
Technical Specifications
- Model Number: 44505-0350
- Manufacturer: STI Guardmaster
- Product Series: SL Safety Limit Switch
- Type: Type I-22
- Contact Rating: AC15
- Input Voltage: 230V AC
- Output Current: 3A Maximum
- IP Rating: IP65 (dust-tight, water-jet resistant)
- Condition: Used, Tested
- Certification: IEC 60947-4 compliant
Typical Applications
The STI 44505-0350 is commonly deployed in:
- Machine guard and interlock systems
- Door and enclosure safety interlocks
- Position sensing and limit detection in automated equipment
- Industrial control circuits requiring IP65-rated components
- Motion control applications where safety-rated switching is mandated
Compatibility & Replacements
Compatible With
- Industrial control systems using AC15-rated contactors and relays
- 24V–230V AC control circuits
- Machine safety and interlock networks
- Automation equipment with Type I-22 limit switch provisions
- IEC 60947-compliant safety systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 44505-0350 is designed as a direct replacement for equivalent STI SL Type I-22 models with matching electrical and mechanical specifications.
Works With
- AC15 electromagnetic control devices and contactors
- Industrial safety relay modules and safety controllers
- 230V AC control signal circuits
- Motor starters and solenoid-driven machinery
- Standard DIN rail-mounted control enclosures








