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Surge protection

MTL IOP digital & analogue I/O surge protector

The Crouse-Hinds series MTL IOP offers protection for both digital I/O and analogue I/O. This is the most economical surge protection solution for I/O offered by our business. Its high packing density, high protection level and low price combine to make the IOP a value solution. 

Installation ease
Removable terminals, easy to test
Safety
ATEX certified
Reliability
20kA rated surge current

Certification and compliance

Europe (Baseefa):

  •  Ex ia IIC T4 Ga

Europe (Eaton):

  • Ex n IIC T4 Ga

International (IECEx):

  • Ex ia IIB T3 Ga
  • Ex ia IIC T4 Ga
  • -40°C ≤ Ta ≤ +70°C

USA (FM):

  • Class 3600 (1998), Class 3610 (2010), Class 3611 (1999), Class 3615 (1989), Class 3810 incl. Supp 1 (1995–07) (1989–03)
  • ANSI/NEMA 250 (1991)
  • ANSI/ISA 60079-0 (2009)
  • ANSI/ISA 60079-11 (2009) 
  • ISA-S12.0.01 (1999)

Canada (FM):

  • C22.2 No. 213, 142, 94, 157, 30
  • ANSI/NEMA 250
  • CAN/CSA-E79-0, CAN/CSA-E79-11

Ambient temperature limits:

  • Working and storage: -40°C to +80°C  (-40°F to +176°F)

Case flammability:  

  • UL94-V0

Design features

  • IOP32D and IOP-AC each provide surge protection for two loops or four wires
  • IOP32 provides surge protection for one loop or two wires
  • IOP HC32 provides surge protection for one high-current loop, up to 5A
  • IOP-AC provides surge protections for two 120V or 240V AC loops
  • Removable terminals – easy installation, easy to test
  • Hybrid protection circuit – 20kA rated surge current
  • ATEX & FM certification for IOP32 and IOP32D
  • Space saving – width per loop: 6mm for IOP32D & IOP-AC; 12mm for IOP32 & IOP HC32
Specifications

Ordering information

For ordering information, please use the link below to visit the resources section for this product family and look under "Catalogues".
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