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Intrinsic Safety Barriers
As of: Monday, November 2, 2026
Standard Features
Each system features excitation, sense and signal barriers
Available in an enclosure for external mounting or in a chassis-mount version
R Stahl® and Pepperl+Fuchs® barriers that are approved by Factory Mutual (FM)
Intrinsically Safe Barriers
Install these barriers in your safe area to limit the current to the hazardous environment, and insure voltage remains at an intrinsically safe level.
Intrinsic Safety Barriers Specifications
| Part # | Voltage Range | Nominal Resistance | Open Circuit Voltage | Short Circuit Current |
Classifications |
|---|---|---|---|---|---|
| 31201: + Excitation 9001/01-158-390-101 |
+12 VDC | 55 ohm | 15.8 VDC | 390 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 31202: ± Excitation 9002/10-187-270-001 |
±6 VDC | 46 ohm | 9.3 VDC | 270 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 31540: + Excitation 9001/01-083-442-101 |
+6 VDC | 26 ohm | 8.3 VDC | 442 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 199867: + Sense 9001/01-086-075-101 |
+6 VDC | 129 ohm | 8.6 VDC | 41 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 30263: ± Signal 9002/77-093-040-001 |
±6 VDC | 519 ohm | 9.3 VDC | 20 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 31542: RS-232 9002/77-093-300-001 |
±6 VDC | 76.6 ohm | 9.3 VDC | 150 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 30264: ± Sense 9002/10-187-020-001 |
±6 VDC | 516.5 ohm | 9.33 VDC | 20 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 30266: - Excitation 9001/00-086-390-101 |
-6 VDC | 30 ohm | 8.6 VDC | 390 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 69491: - Excitation 9001/02-016-150-111 |
±0.7 VDC | 20 ohm | 1.64 VDC | 150 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 69492: + Sense 9001/01-168-020-101 |
+12 VDC | 918 ohm | 16.8 VDC | 20 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 69493: - Sense 9001/02-016-015-101 |
±0.7 VDC | 127 ohm | 1.64 VDC | 15 mA | FM approved, UL listed, CSA certified, SA, CE marked |
| 72521: + Excitation 9001/01-199-390-101 |
+16 VDC | 67 ohm | 19.9 VDC | 390 mA | FM approved, CSA certified, CE marked |
| 30265: + Excitation 9001/01-086-390-101 |
+6 VDC | 30 ohm | 8.6 VDC | 390 mA | FM approved, CSA certified, CE marked |
| 221779: + Excitation Barrier, Z713 |
+13.7 VDC | 22 ohm | 15.75 VDC | 160 mA | FM Approved, cULus, ATEX, IECEX |
| 221663: - Excitation Barrier, Z813 |
-13.7 VDC | 22 ohm | 15.75 VDC | 160 mA | FM Approved, cULus, ATEX, IECEX |
| 221662: ± EX Barrier, Z966 |
±10 VDC | 166 ohm | 12 VDC | 50 mA | FM Approved, cULus, ATEX, IECEX |
| 221660: ± Signal Barrier, Z961 |
±6.5 VDC | 100 ohm | 8.7 VDC | 100 mA | FM Approved, cULus, ATEX, IECEX |
| 221661: ± Sense Barrier, Z964 |
±10 VDC | 1000 ohm | 12 VDC | 50 mA | FM Approved, cULus, ATEX, IECEX |
R Stahl Barriers #1: For models with ± 5 Volt excitation (10 volt)
| Part # | Description | List Price |
|---|---|---|
| 31202 | +/-Excitation or 4-20 mA CL 9002/10-187-270-001 | List Price: $595.00 |
| 30264 | +/-Sense 9002/10-187-020-001 | List Price: $595.00 |
| 30263 | +/-Signal 9002/77-093-040-001 | List Price: $725.00 |
| 109663 | Uncased barrier kit #1 | List Price: $1,610.00 |
Barrier Kit #2: (For models with + 10 Volt excitation)
| Part # | Description | List Price |
|---|---|---|
| 31201 | + Excitation 9001/01-158-390-101 | List Price: $495.00 |
| 69491 | -Excitation 9001/02-016-150-111 | List Price: $495.00 |
| 69492 | +Sense 9001/01-168-020-10 | List Price: $495.00 |
| 69493 | -Sense 9001/02-016-015-101 | List Price: $495.00 |
| 30263 | +/-Signal 9002/77-093-040-001 | List Price: $725.00 |
Barrier Kit #3: (For models with + 5 Volt excitation)
| Part # | Description | List Price |
|---|---|---|
| 31540 | +Excitation 9001/01-083-442-101 | List Price: $375.00 |
| 69491 | -Excitation 9001/02-016-150-111 | List Price: $495.00 |
| 30263 | +/-Signal 9002/77-093-040-001 | List Price: $725.00 |
If sense leads are for the above, use the following:
| Part # | Description | List Price |
|---|---|---|
| 199867 | + Sense, 9001/01-086-075-101 Single Channel | List Price: $825.00 |
| 69493 | -Sense 9001/02-016-015-101 | List Price: $495.00 |
Miscellaneous Barriers:
| Part # | Description | List Price |
|---|---|---|
| 30266 | -Excitation 9001/00-086-390-10 Single Channel. | List Price: $495.00 |
| 30265 | +Excitation 9001/01-086-390-10 Single Channel. | List Price: $675.00 |
| 72521 | +Excitation 9001/01-199-390-10 | List Price: $525.00 |
| 197643 | RS-422 Stahl 9002/22-032-300-111 | List Price: $850.00 |
| 31542 | 9002/77-093-300-001, RS232 | List Price: $595.00 |
Pepprl+Fuchs Barrier Kit #1 for multiple load cell applications:
| Part # | Description | List Price |
|---|---|---|
| 221779 | Pepperl-Fuchs high power excitation barrier | List Price: $345.00 |
| 221663 | Pepperl-Fuchs high power excitation barrier | List Price: $745.00 |
| 221661 | Pepperl-Fuchs sense barrier | List Price: $365.00 |
| 221660 | Pepperl-Fuchs signal barrier | List Price: $375.00 |
Pepprl+Fuchs Barrier Kit #2 for single load cell applications:
| Part # | Description | List Price |
|---|---|---|
| 221662 | Pepperl-Fuchs excitation barrier | List Price: $385.00 |
| 221661 | Pepperl-Fuchs sense barrier | List Price: $365.00 |
| 221660 | Pepperl-Fuchs signal barrier | List Price: $375.00 |
| Part # | Description | List Price |
|---|---|---|
| 33531 | 35mm Width x 7.5mm High | List Price: $15.00 |
| 35815 | Instruction Sheet | List Price: $15.00 |
| 110424 | FRP Enclosure, Din Rail, 2 Cord Grips Grounding Material *** Barriers Not Included *** | List Price: $295.00 |
| 22828 | Universal DIN Rail Mounted | List Price: $25.00 |
| 42219 | for Stahl barriers | List Price: $15.00 |
| 208123 | Din Rail Mounting Clips To Isolate Ground | List Price: $5.00 |
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