Protectowire is the originator of Linear Heat Detectors and the leading manufacturer of Special Hazard Linear Heat Detection Systems. Our solutions include complete alarm systems for fire detection suitable for a vast array of industrial and commercial applications.

With a deep commitment to staying at the forefront of technology, Protectowire has positioned itself as an innovator, industry leader, developing and improving products designed to meet the challenges of a broad range of applications.

Our specialized engineering and design talents are focused on providing our customers with a ‘total system approach’ by providing state-of-art detection products coupled with unparalleled customer service.

For 80 years, many of the world’s largest companies have chosen Protectowire Fire Detection Systems to protect their valuable assets and business operations. We have built our reputation on proven product reliability, extensive experience and innovation across a vast array of industries and outstanding customer service support.

Our team of skilled and experienced employees works closely with a global network of authorized distributors making sure they are well educated on the products and possibilities to provide superior service and the highest quality in fire detection systems to our customers.


The Protectowire team is dedicated to bringing you products designed, engineered, manufactured, and tested with the highest degree of performance, reliability, and quality.  Our third party independently reviewed and approved ISO-9001:2008 Quality Assurance Program forms the basis of our quality commitments.  The quality policy stems from our President’s commitment to assure our products and services are reliable and efficient while conforming to required statutory, environmental, and safety regulations and to maintain customer satisfaction at the highest economic level.

The quality systems ensures that all quality activities are carried out under controlled conditions, are continuously monitored and improved to meet or exceed Customer needs and expectations.  Our customer focus and personal attention results in customer satisfaction second to none.  Our customers appreciate our commitment to quality and serve as our best source for referrals and growth.

Click Here to View our ISO 9001 2015 A3 2017 Certificate of Registration

Health, Safety and Environment

We are committed to producing products for our customers in a safe, responsible manner that respects the health and safety of our employees, customers, and the environment.  Individual products are listed and approved by Underwriters Laboratories and Factory Mutual Corporation for compliance and operator Safety.

We select processes and product materials to minimize impact on the environment.  For example, all of our Linear Heat Detector products are in compliance with the EU Directive Restriction of Hazardous Substances in Electric and Electronic Equipment (RoHS) – Directive 2002/95/EC.  Our unique materials identification system allows for complete traceability of Protectowire Linear Heat Detector materials.

Engineering, Research and Development

Our specialized engineering and design talents are focused on a variety of system control such as intrinsically safe circuits, deluge valve actuation, auxiliary equipment shutdown, and remote function annunciation. Whatever the application, you can trust that we can provide a system to fit your needs.  R&D has produced Confirmed Temperature Initiation Technology (CTI), as discussed earlier, and have developed improved chemical and abrasion resistant jacket materials for our full line of Protectowire Linear products.


The Protectowire Company trains system designers, distributors, and end users in the selection, specification, and installation of Protectowire special hazard fire detection systems and accessories. In-house seminar style training provides added assurance that Protectowire special hazard fire detection systems, as selected and installed, will meet codes and customer requirements.  Training seminars are part of the personalized technical services that our customers have come to expect and that set us above other manufacturers.


Let us introduce ourselves.

  • John A. Whaling
    John A. Whaling President

    John A. Whaling joined The Protectowire Co, Inc. in 1995. John came to the company with 17 years’ experience in the special hazards fire detection and suppression systems industry. Prior to joining Protectowire John was an Account Executive with a major manufacturer of fire detection and suppression systems whose products were marketed worldwide. Other positions held within the fire detection /suppression industry include that of Sales and Marketing Manager for a nationwide suppression systems distributor along with Division Manager for a national fire protection contractor. John is currently an active member of SFPE and serves as a Principal on the Technical Committee for NFPA 88A Standard Parking Structures…Read More

  • Andrew K. Sullivan
    Andrew K. Sullivan Chairman

    Since its’ founding in 1938, The Protectowire Company has been a privately held family run business.  Andrew is a second generation family member to take leadership of the Company.  Starting with the Company in 1987 as a Regional Sales Manager, Andrew learned the business by actively participating in all aspects of the company’s daily operations which eventually lead to his appointment as President in 1995…. Read More

  • Stephen J. Loughlin
    Stephen J. Loughlin Vice President, Chief Financial Officer

    Steve is responsible for managing the financial side of the business, including treasury, audit, tax, accounting, and human resources. Steve has a career in finance that spans more than 35 years. He joined the Protectowire team in 1997. From 1986 – 1997 Steve served as Vice President of Finance for Bainbridge/Aquabatten, Inc. a worldwide distributor & manufacturer of sailcloth. After college, from 1978 – 1986, he was cost accounting manager for BIW Cable systems…Read More

  • Bill Eppich
    Bill Eppich Vice President International Sales

    Bill Eppich is the Vice President of International Sales for the Protectowire Company responsible for executing the strategy which leverages all e-com, channel and direct communications to penetrate new and existing International accounts. His position provides recommendations to the marketing group in order to establish the marketing needs of the assigned territories to align the sales and marketing strategy and manage all partnerships and Distributors in assigned territories in line with the regional plan and company policies. His position includes on-site technical seminars and product presentations at International Distributor locations around the world…Read More