Intrinsic Safety Barriers

As of: Saturday, March 29, 2025

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 #31201:
+ Excitation 9001/01-158-390-101
Voltage Range:
+12 VDC
Internal Resistance:
55 ohm
Open Circuit Voltage:
15.7 VDC
Short Circuit Current:
390 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #31202:
± Excitation 9002/10-187-270-001
Voltage Range:
±6 VDC
Internal Resistance:
46 ohm
Open Circuit Voltage:
18.7 VDC
Short Circuit Current:
278.8 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #31540:
+ Excitation 9001/01-083-442-10
Voltage Range:
+6 VDC
Internal Resistance:
48 ohm
Open Circuit Voltage:
8.4 VDC
Short Circuit Current:
442 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #70724:
+ Sense 9001/01-086-020-101
Voltage Range:
+6 VDC
Internal Resistance:
470 ohm
Open Circuit Voltage:
8.6 VDC
Short Circuit Current:
18.3 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #30263:
± Signal 9002/77-093-040-001
Voltage Range:
±6 VDC
Internal Resistance:
482 ohm
Open Circuit Voltage:
9.6 VDC
Short Circuit Current:
40.9 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #31542:
RS-232 9002/22-093-300-001
Voltage Range:
±6 VDC
Internal Resistance:
75.8 ohm
Open Circuit Voltage:
9.6 VDC
Short Circuit Current:
297.5 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #30264:
± Sense 9002/10-187-020-001
Voltage Range:
±6 VDC
Internal Resistance:
482 ohm
Open Circuit Voltage:
18.7 VDC
Short Circuit Current:
22 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #30266:
- Excitation 9001/00-086-390-101
Voltage Range:
-0.6 VDC
Internal Resistance:
30 ohm
Open Circuit Voltage:
8.6 VDC
Short Circuit Current:
377.6 mA
Classifications:
FM approved

Part #69491:
- Excitation 9001/02-016-150-111
Voltage Range:
±0.7 VDC
Internal Resistance:
12.8 ohm
Open Circuit Voltage:
1.64 VDC
Short Circuit Current:
127.4 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #69492:
+ Sense 9001/01-168-020-101
Voltage Range:
±12 VDC
Internal Resistance:
898 ohm
Open Circuit Voltage:
16.8 VDC
Short Circuit Current:
18.7 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #69493:
- Sense 9001/02-016-015-101
Voltage Range:
+0.7 VDC
Internal Resistance:
127 ohm
Open Circuit Voltage:
1.64 VDC
Short Circuit Current:
13.7 mA
Classifications:
FM approved, UL listed,
CSA certified, SA, CE marked

Part #72521:
- Excitation 9001/01-199-390-101
Voltage Range:
+16 VDC
Internal Resistance:
67 ohm
Open Circuit Voltage:
-19.9 VDC
Short Circuit Current:
382.7 mA
Classifications:
FM approved, CSA-certified,
CE marked

Part #30265:
+ Excitation 9001/01-086-390-101
Voltage Range:
+6 VDC
Internal Resistance:
30 ohm
Open Circuit Voltage:
8.6 VDC
Short Circuit Current:
377.6 mA
Classifications:
FM approved

Parts

Part #	Description
Stahl Barriers #1: For models with ± 5 Volt excitation (10 volt)
31202	9002/10-187-270-001, ± excitation barrier
30264	9002/10-187-020-001, ± sense barrie
30263	9002/77-093-040-001, ± signal barrier
109663	DIN rail mounted kit #1 (includes 31202, 30264, 30263)
Barrier Kit #2: (For models with + 10 Volt excitation)
31201	9001/01-158-390-101, + excitation barrier
69491	9001/02-016-150-111, - excitation barrier
69492	9001/01-168-020-101, + sense barrier
69493	9001/002-016-015-101, - sense barrier
30263	9002/77-093-040-001, ± signal barrier
Barrier Kit #3: (For models with + 5 Volt excitation)
31540	9001/01-083-442-101, + excitation barrie
69491	9001/02-016-150-111, - excitation barrier
30263	9002/77-093-040-001, ± signal barrier
If sense leads are for the above, use the following:
199867	900/01-086-075-101, + sense barrier
69493	9001/02-016-015-10, - sense barrier
Miscellaneous Barriers:
30266	9001/00-086-390-101, - excitation barrier
30265	9001/01-086-390-101, + excitation barrier
72521	9001/01-199-390-101, + excitation barrier
197643	Barrier, dual channel, RS-422
31542	9002/77-093-300-001, RS-232
Pepprl-Fuchs Barrier Kit #1 for multiple load cell applications:
221779	Barrier, Z713 +Excitation
221663	Barrier, Z813 -Excitation
221661	Barrier, Z964 +/- Sense
221660	Barrier, Z961 +/- Signal
Pepprl-Fuchs Barrier Kit #2 for single load cell applications:
221662	Barrier, Z966 +/- EX
221661	Barrier, Z964 +/- Sense
221660	Barrier, Z961 +/- Signal

Options

Part #	Description

33531	Rail,DIN 6" Length 35mm Width x 7.5mm High
35815	LIT, Manual IS Barrier Instruction Sheet
110424	Enclosure Assy,IS Barrier FRP Enclosure, Din Rail, 2 Cord Grips Grounding Material * Barriers Not Included *
22828	Terminal Block,Grounding Universal DIN Rail Mounted
42219	Fuse,IS Barrier 160mA for Stahl barriers
208123	Isolator, Barrier Mount Din Rail Mounting Clips To Isolate Ground