INTRINSICALLY SAFE BARRIER RELAYS

Intrinsically Safe Barrier Relays protect hazardous location circuits and control loads without additional relays or contactors. IS circuits operate at low energy levels that cannot ignite potentially explosives atmospheres. In the event of a fault condition, these Intrinsically Safe Barrier Relays prevent excess voltage and current from reaching the hazardous area.

Circuit Protection and Control in One Compact Device

Macromatic’s Intrinsically Safe Barrier Relays are approved for use in these Hazardous Locations: Class I, Div 1 (Zones 0 and 1 Canada), Groups A, B, C, D; Class II, Div 1 (Zones 20 and 21 Canada), Group E, F, G; Class III, Div 1. Choose from three enclosure styles:

 

4-CHANNEL 60 MM WIDE

ISD Series Barrier Relays control up to four loads. Models are available to apply time delay and logic selection independently to each channel. These relays mount on 35 mm DIN-rail or can be panel mounted.

1-CHANNEL 17.5MM WIDE

ISE Series Barrier Relays control a single load with a single input from the hazardous area These relays mount on 35 mm DIN-rail or can be panel mounted. Choose standard or inverse logic.

1-CHANNEL PLUG-IN

ISP Series Barrier Relays, with an 8-pin configuration with included socket, mount on 35 mm DIN-rail or can be panel mounted. Note that the ISP Series is not approved for use in hazardous zones in Canada.

Enclosure Style
ISBR Enclosure
  • 60mm (2)
  • 17.5mm (1)
  • Compact 17.5mm wide enclosure for both DIN-rail & panel-mounting with four screws (1)
  • Plug-in case with 8 pin socket & mounting bracket included (1)
Function
ISBR Function
  • Operating configuration applied to single channel relays (3)
  • Operating configuration applied to all channels (1)
  • Operating configuration independently applied to each channel (1)
Control Voltage
ISBR Control Voltage
  • Universal: 102-132V AC & 10-125V DC (5)
Number of Channels
ISBR Numb Channels
  • 1-Channel (3)
  • 4-channel (2)
Standard Modification
ISBR Standard Modification
  • None (4)
  • Inverted Operation (1)

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ISD

Series

Function: 

Operating configuration independently applied to each channel

Control Voltage:

Universal: 102-132V AC & 10-125V DC

Number of Channels:

4-channel

Enclosure Style:

4-channel

Standard Modifications:

None

$612.71

ISD

Series

Function: 

Operating configuration applied to all channels

Control Voltage:

Universal: 102-132V AC & 10-125V DC

Number of Channels:

4-channel

Enclosure Style:

4-channel

Standard Modifications:

None

$515.44

ISE

Series

Function: 

Operating configuration applied to single channel relays

Control Voltage:

Universal: 102-132V AC & 10-125V DC

Number of Channels:

1-channel

Enclosure Style:

1-channel

Standard Modifications:

None

$156.65

ISE

Series

Function: 

Operating configuration applied to single channel relays

Control Voltage:

Universal: 102-132V AC & 10-125V DC

Number of Channels:

1-Channel

Enclosure Style:

1-Channel

Standard Modifications:

Inverted Operation

$156.65

ISP

Series

Function: 

Operating configuration applied to single channel relays

Control Voltage:

Universal: 102-132V AC & 10-125V DC

Number of Channels:

1-Channel

Enclosure Style:

1-Channel

Standard Modifications:

None

$231.32

Frequently Asked Questions About Intrinsically Safe Barrier Relays

 
 

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Intrinsically Safe Relays

Knowledge Base Articles

Technical reports to answer your questions

Knowledge Base Articles

Rapid Cycling of Control Switch Damages Large Pumps or Compressor Motors

Issue: How do I prevent a Bouncing Control Switch Due to Splashing Water from Rapidly Energizing One Load and Then the Other?   Solution/Resolution:  In Figure A, a single Control Switch could be susceptible to splashing water which would cause rapid opening & closing of the Control Switch.  Each time this happens, one Load is rapidly […]

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Troubleshooting for a Phase Reversal (Phase Sequence) Problem

Issue: I have purchased one of your three phase monitor relays and have connected it per the diagram on the unit. However, I cannot get the unit to operate–it just won’t turn on. What’s wrong? Solution/Resolution: Most problems when first installing and applying a three-phase monitor relay are due to phase sequence issues. Although you […]

Knowledge Base Articles

Troubleshooting for a Phase Reversal (Phase Sequence) Problem

Issue: I have purchased one of your three phase monitor relays and have connected it per the diagram on the unit. However, I cannot get the unit to operate–it just won’t turn on. What’s wrong? Solution/Resolution: Most problems when first installing and applying a three-phase monitor relay are due to phase sequence issues. Although you […]

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