Barreira de segurança intrínseca R. STAHL 9176/20-15-00s saída binária de 2 canais (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.