Magnet-Schultz of America Blog

Haz-Loc®  Certification

Posted by: Magnet-Schultz of America

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Wed, Jun 29, 2016 @ 10:00 AM



Hazardous-Location and Explosion Proof Electro-Hydraulic

Solenoid Coils with Worldwide Approvals

June 28, 2016 – Westmont, IL -- Magnet-Schultz of America, Inc. (MSA), a leading innovator and manufacturer of solenoids, electromagnetic devices, and value added assemblies, introduces a family of electro-hydraulic coils which are certified for worldwide use in hazardous locations (gas and dust atmospheres) and in environments that demand explosion proof capabilities.

Called HAZ-LOC®, this family of coils has the unique capability of being able to mount on multiple manufacturer’s hydraulic tubes (with diameters of either 13mm, 16mm, 19mm or 22mm).  

Each coil incorporates a junction box for electrical connection, and is certified for use in either 40° C or 80° C maximum ambient temperatures.

Every HAZ-LOC® coil provides compliance with all of the following governing standards:


United States of America

NEC 500

  • GAS:    Class I (Division 1) Group A, B, C, D, T4
  • DUST:  Class II & III (Division 1) Group E, F, G, T4

NEC 505

  • GAS:    Class 1 (Zone 1) AEx d IIC Gb T4
  • DUST:  Class II (Zone 21) AEx tb IIIC Db T4




  • GAS:    Ex d IIC T4 Gb T4
  • DUST:  Ex tb IIIC Db T4 (Zone 21)




  • GAS:    II 2 G | Ex d IIC T4 Gb (Zone 1)
  • DUST:  II 2 D | Ex tb IIIC T135 Db (Zone 21)


International (excluding above locations)


  • GAS:    Ex d IIC T4 GB
  • DUST:  Ex Tb IIIC T135 Db

T4 in all above standards indicates the maximum surface temperature limitation of 135° C.



  • Oil and gas exploration, production and transportation
  • Bulk material storage and handling such as:

    -Grain Elevators, Loading Docks, and Ships

    -Coal & Fertilizer Handling Facilities

    -Saw Mills, and Wood Cutting Facilities

  • Mobile equipment used in hazardous locations and potentially explosive environments
  • Industrial and chemical processing facilities which involve volatile liquids and/or dust



  • Sizes:   Length:         95.3mm (3.75“)

                Width:          50.8mm (2”)

                Heights:        40mm (for a 13mm diameter tube)

                                    50mm (for a 16mm diameter tube)

                                    60mm (for 19mm and 22mm tube diameters)

  • Corrosion Protection:  Electroplated Zinc-Nickel with Trivalent Chromate

                                    Meets Salt Fog requirements in accordance with ASTM B-117, 5% salt solution

                                    Exceeds AMS 2417: 1000 hrs to white rust, 1500 hrs to red rust

  • Environmental Protection:  IP65, NEMA 4X

  • RoHS Compliant

  • Standard Voltages:  12 & 24 VDC, 120 & 240 VAC

  • Inlet Thread:  ½” NPT Conduit, or M20x1.5 Cable Gland

  • Internal Thermal Classification:  Class H, Double Insulated Magnet Wire

  • Ambient Temperatures:  -40° C to 40° C or -40° C to 80° C


Magnet-Schultz of America, Inc. is a subsidiary of Magnet-Schultz Worldwide, the world’s largest independent manufacturer of high quality solenoids and electromagnetic products.

Utilizing HAZ-LOC® coils, MSA can also provide complete electro-hydraulic tube and coil assemblies.

For additional information concerning the HAZ-LOC® family of products, please visit, and/or contact MSA directly at 630-789-0600.


Download: MSA HAZ-LOC Brochure


Topics: Hazardous Location Solenoid Coils