R. STAHL 9176/20-15-00s 2-Channel Binary Output Intrinsic Safety Barrier (165567)

In hazardous areas, safe signal transmission from NAMUR sensors or mechanical contacts to control systems demands reliable galvanic isolation without auxiliary power. The R. STAHL 9176/20-15-00s binary output barrier solves this by providing a passive, 2-channel intrinsically safe interface that converts input signals into potential-free relay contacts.

Who is it for

Automation engineers and system integrators working in process industries such as chemical, pharmaceutical, and oil & gas, where Ex i protection and SIL 2 functional safety are required for binary signal loops.

Main features

• 2-channel binary output with potential-free change-over relay contacts
• No auxiliary power required (passive operation)
• Intrinsic safety Ex i for connection to NAMUR proximity switches or mechanical contacts
• Explosion protection marking: [Ex ia] IIC, [Ex ia] IIB, [Ex ia] I
• SIL 2 according to IEC/EN 61508
• Switching capacity up to 500 VA / 60 W
• DIN rail mounting (NS35/7.5 or NS35/15)
• Operating temperature range -20 °C to +70 °C

Specifications

• Product type: Intrinsic safety isolating barrier
• Function: Binary output
• Number of channels: 2
• Input type: NAMUR proximity switch / mechanical contact
• Output type: Potential-free change-over contact (relay)
• Auxiliary power: None (passive)
• Max. switching voltage: 250 V AC / 125 V DC
• Max. switching current: 2 A
• Max. switching capacity: 500 VA / 60 W
• Switching frequency: < 10 Hz
• Mounting type: DIN rail NS35/7.5 or NS35/15
• Connection type: Screw terminals
• Operating temperature: -20 °C to +70 °C
• Degree of protection: IP20
• Certifications: ATEX, IECEx, EAC, cULus

Tips

Ensure the barrier is mounted on a grounded DIN rail and that the intrinsically safe wiring is separated from non-intrinsically safe circuits according to installation standards.