STAHL 946012-08-11

Product Name: STAHL IS Barrier / Isolator 946012-08-11
Product Type: Intrinsic Safety Barrier — 2-Channel
Manufacturer: R. STAHL AG (Germany)
Model Series: 9460 Series
Product Line: Multi-Channel IS Barriers

Category:
Description

Product Introduction:
The STAHL 946012-08-11 is a 2-channel intrinsically safe barrier providing galvanic isolation for two independent field circuits. Each channel is independently fused and energy-limited, enabling safe connection of multiple field instruments to a single safe-area control system.

Technical Specifications:

  • Input Voltage (Ui): 24 V DC
  • Number of Channels: 2 (independent)
  • Output Voltage (Uo): 24 V DC (per channel)
  • Output Current (Io): 93 mA (per channel, max)
  • Intrinsic Safety Parameters (per channel): Ui = 24 V, Ii = 93 mA, Pi = 0.65 W, Li = 0 mH, Ci = 0 µF
  • Fuse Rating: 1 A (per channel, fast-acting)
  • Isolation Voltage: 500 V AC
  • Operating Temperature: -20°C to +60°C
  • Protection Rating: IP20
  • Certifications: ATEX, IECEx, CSA, FM

Functional Features:

  • 2 independent intrinsically safe output channels
  • Individual channel status LEDs
  • Per-channel fuse protection
  • Galvanic isolation between channels
  • Short-circuit proof on each output

Structure:

  • DIN rail mounting (35 mm)
  • Spring-clip terminals for each channel
  • Plastic housing, grey (RAL 7035)

Applicable Industries:
Oil & Gas, Petrochemical, Power Generation, Mining

Installation Requirements:

  • DIN rail EN 60715 (35 mm)
  • Each channel must be wired independently to field devices
  • Ground terminal must be connected to plant earth

Usage Notes:

  • Do not parallel outputs of different channels
  • Maximum of 93 mA per channel must not be exceeded
  • Fuse replacement must use identical rating (1 A fast-acting)
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