Customize Consent Preferences

We use cookies to help you navigate efficiently and perform certain functions. You will find detailed information about all cookies under each consent category below.

The cookies that are categorized as "Necessary" are stored on your browser as they are essential for enabling the basic functionalities of the site. ... 

Always Active

Necessary cookies are required to enable the basic features of this site, such as providing secure log-in or adjusting your consent preferences. These cookies do not store any personally identifiable data.

No cookies to display.

Functional cookies help perform certain functionalities like sharing the content of the website on social media platforms, collecting feedback, and other third-party features.

No cookies to display.

Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source, etc.

No cookies to display.

Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors.

No cookies to display.

Advertisement cookies are used to provide visitors with customized advertisements based on the pages you visited previously and to analyze the effectiveness of the ad campaigns.

No cookies to display.

EXT-401

EXT-401

The EXT-401 Explosion Proof Telephone provides safe and reliable communications for Class I Division 1 and Class II Division 1 areas deemed to be hazardous due to the presence of flammable gasses, vapors, dust or fibers.

Manual
Specifications
Certifications
Images
Standards Compliance

CSA 1514630 (LR 65547)

CSA
Class I, Division 1, Groups B, C and D;
Class II, Division 1 and 2, Groups E, F and G
CSA C22.2 No. 30 – M1986 Explosion-Proof Enclosures for Use in Class I Hazardous Locations
C22.2 No. 157 – 1992 – Intrinsically Safe Equipment for use in Class I Hazardous Locations
CLASS 4818 02 – SIGNAL APPLIANCES – Audible – For Hazardous Locations
CSA Certificate 1514630 (LR 65547)

Industry Canada – 1012 4339 A

Hearing-aid Compatible Equipment
Registration – 1012 4339 A

UL WZAT.E117495

UL
Class I, Groups B, C and D;
Class II, Groups E, F and G.

Telephones, Models 401UH301A, U301A, UH301B. Explosion-proof, provides intrinsically safe outputs when connected to Handset Part Nos. 301SC or , 301SCPB or Headset Model No. ISH1125.
UL Certificate WZAT.E117495

Part Nos. 301SC, 301SCPB Handset and Model No. ISH1125 Headset, Intrinsically safe when connected to Models 401UH301A, UH301B, U301A,
explosion proof telephones.

UL Certificate WZAT.E117495

Product Features

  • Over sized buttons for gloves-on operation
  • Corrosion and moisture resistant circuitry
  • Intrinsically safe handset with heavy duty cord
  • Field replaceable handset and fuse
  • Explosion proof, no isolation barrier required
  • Copper-free cast aluminum housing
  • Temperature range -40°C to +60°C (-40°F to +140°F)
  • Select Models (see data sheet for full line)
  • P4011 Basic Telephone (base model)
  • P4021 Ring Detect Relay (RDR)
  • P4031 Volume Control / Ring Detect Relay
Contact Us

We're not around right now. But you can send us an email and we'll get back to you, asap.

Not readable? Change text. captcha txt

Start typing and press Enter to search products