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Intrinsic Safety Barriers

  • Each system features excitation, sense and signal barriers
  • Available in an enclosure for external mounting or in a chassis mount version
  • R Stahl® or equivalent barriers that are approved by Factory Mutual (FM)
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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.

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

Resources / Downloads

Title Download Email
Intrinsic Safety Barriers Catalog Page Download Email
Explosive Environment Equipment Policy Download Email
Explosive Environment Solutions Download Email
Hazardous Atmospheres Download Email

Title Version Revision Download Email Category Archived
Intrinsic Safety Barrier Instruction Sheet A Download Email No

Title Download Email
Hazardous Area Classification Download Email

Title View Download Email Category
ScaleTalk: What are Hazardous Areas? View Download Email

Parts

Barrier Kit #1: (For models with ± 5 Volt excitation) (10 volt)

Part # Description List Price Cart
109663
Barrier Set, Uncased Uncased barrier kit #1

List Price: $1,610.00
31202 Barrier, IS Dual Channel +/-Excitation or 4-20 mA CL 9002/10-187-270-001

List Price: $475.00
30264 Barrier, IS Load Cell +/-Sense 9002/10-187-020-001

List Price: $495.00
30263 Barrier, IS Load Cell +/-Signal 9002/77-093-040-001

List Price: $495.00

Barrier Kit #2: (For models with + 10 Volt excitation)

Barrier Kit #3: (For models with + 5 Volt excitation)

If sense leads are needed, use the following:

Miscellaneous Barriers:

Options

Part # Description List Price Cart
33531 Rail,DIN 6" Length 35mm Width x 7.5mm High

List Price: $12.00
35815 LIT, Manual IS Barrier Instruction Sheet

List Price: $15.00
110424 Enclosure Assy,IS Barrier FRP Enclosure, Din Rail, 2 Cord Grips Grounding Material *** Barriers Not Included ***

List Price: $240.00
22828 Terminal Block,Grounding Universal DIN Rail Mounted

List Price: $25.00
42219 Fuse,IS Barrier 160mA

List Price: $15.00
208123 Isolator, Barrier Mount Din Rail Mounting Clips To Isolate Ground

List Price: $5.00

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