Announcements

Tecmark Corporation has promoted these products / services:

Tecmark Corporation - Reliable Power Protection for Data Centers

LINEGARD® GFCI/ELCI ensures safe, reliable operation across critical power paths, supporting the evolving demands of AI-ready, high-density data centers. (read more)

Tecmark Corporation - Advanced GFCI Safety for Data Centers

LINEGARD® GFCI/ELCI ensures safe, reliable operation across critical power paths, supporting the evolving demands of AI-ready, high-density data centers (read more)

Tecmark Corporation - GFCI Protection for Critical Data Center Power

LINEGARD® GFCI/ELCI ensures safe, reliable operation across critical power paths, supporting the evolving demands of AI-ready, high-density data centers. (read more)

Tecmark Corporation - Meeting NEC GFCI Rules in Commercial Kitchens

Provide Class-A protection to meet the latest code requirements and protect personnel and equipment. (read more)

Tecmark Corporation - Linegard® 40–60A GFCI for 208V Systems
  • 208 VAC - 3Ø Delta (can be wired as single phase)
  • NEMA 4X wet location rated
  • Enclosure withstands Chemical and U.V. light exposure
  • Double insulated user interface for added safety
  • Industrial design - indoor/outdoor application use
  • Flying leads for electrical circuit splicing
(read more)
Tecmark Corporation - NEC 590 the Code for Temporary Power

Did you know they moved the GFCI section in NEC 590 (the Code for Temporary Power)? (read more)

Tecmark Corporation - NEC compliant UL listed GFCI for food use

Provide Class-A protection to meet the latest code requirements and protect personnel and equipment. (read more)

Tecmark Corporation - OSHA-Compliant GFCI Protection for Construction

Learn more about the ground fault protection required at your construction site. (read more)

Tecmark Corporation - Does a pool pump need a GFCI?

NEC Article 680 mandates electrical protection guidelines of aquatic structures. Learn more about ground fault protection for pools, spas, fountains, and more. (read more)

Tecmark Corporation - Linegard® 40-60 A GFCI

Linegard® 40-60 A GFCI protects personnel and equipment in 208 V from hazardous current leakage at a Class A level. NEMA 4X rated and cULus certified. North Shore Safety. (read more)

Tecmark Corporation - Class A GFCI Protection for Commercial Kitchens

NEC compliant UL listed GFCI for food use
Provide Class-A protection to meet the latest code requirements and protect personnel and equipment. (read more)

Tecmark Corporation - Keep Pool Installs Up to Code with GFCIs

North Shore Safety offers a wide variety of GFCI, ELCI, and EVSE products in our LineGard electrical protection series. The UL Listed Class A & C GFCI products, as well as our CSA Listed ELCI products, provide protection for 15 to 60 Amp single, split, and 3 phase applications. This allows you to stay protected in hazardous environments while adhering to NEC guidelines. (read more)

Tecmark Corporation - Do you need a GFCIs on a jobsite?

Read this article to learn more about what UL Listed Class A GFCI protection is needed and where at your next job site! (read more)

Tecmark Corporation - What is NEC 590?

NEC Article 590 stipulates the electrical safety measures for temporary power. Learn more about the ground fault protection required at your construction site. (read more)

Tecmark Corporation - UL Listed 30 Amp ceiling drop GFC

Did you know a ceiling drop GFCI needs a mesh grip to be UL Listed? Great for locations with space restrictions, North Shore Safety offers the only UL Listed 30 Amp ceiling drop GFCI in the industry! (read more)

Tecmark Corporation - Our 20 Amp can handle almost anything!

Yes, Our 20 Amp can handle almost anything... we're not kidding. It's NEMA 4X, IP69, IP69K rated to withstand the harshest indoor and outdoor environments. (read more)

Tecmark Corporation - WHY DO YOU NEED A GFCI?

Are You Providing Yourself and Your Customers the Best Protection? (read more)

Tecmark Corporation - SHOULD YOU GET AN ELCI?

Are You Providing Yourself and Your Customers the Best Protection? (read more)

Tecmark Corporation - Class A GFCI Protection for Lighting Systems

After a lighting fixture is installed, it needs to have the proper Class A (GFCI) protection in place to safeguard people around these applications, which North Shore Safety’s LineGard Series can provide. Make sure to know the NEC guidelines in your given industry to ensure you are providing proper GFCI protection for permanent or portable use. (read more)

Tecmark Corporation - Advanced GFCI Protection for Healthcare Facilities

Healthcare facilities rely on advanced, high-power electrical systems that demand reliable protection. North Shore Safety’s LineGard Series provides Class A GFCI solutions designed for single, split, and three-phase applications, helping healthcare environments maintain electrical safety, system reliability, and compliance with industry standards. (read more)

Tecmark Corporation - NEC-Compliant GFCI Protection for Pools & Spas

North Shore Safety’s LineGard Series Class A (GFCI) & Class C (SPGFCI) solutions seamlessly integrate into electrical systems for pools, spas, and fountains to make these applications NEC compliant. (read more)

Tecmark Corporation - HF-Rated Ground Fault Protection

As NEC expands ground fault protection, high-frequency noise from VFDs and inverters can cause nuisance GFCI trips. HF-rated GFCIs address this by adjusting leakage thresholds based on frequency, allowing safe operation without false trips. Codified in UL 943 for the 2026 NEC cycle, they work with UL 101-listed equipment to ensure compliance and reliable protection in high-frequen... (read more)

Tecmark Corporation - Understanding HF-Rated GFCI Protection

High Frequency (HF) rated Ground Fault Circuit Interrupters have been created to address this issue, following an inverse time curve (depicted in the chart above) that de-rates the value of leakage current corresponding to the frequency within in the circuit, which will allow safe operation while avoiding nuisance tripping. (read more)

Tecmark Corporation - NEC 680 Ground Fault Rules for Pools & Spas

Higher Amperages requiring GFCI protection. HF rated equipment giving relief in pump & motor applications.

Read about these changes in more in the 2026 NEC edition of Code 680, which covers Pools, Spas, Fountains, and similar aquatic structures. (read more)

Tecmark Corporation - Tecmark Pressure Switches for Gas, Water, Air

Tecmark Pressure Switches are available in various configurations for air, gas and liquid sensing applications. (read more)

Tecmark Corporation - Pressure Switches for Air, Gas & Liquids

Pressure switches for gas, water, air sensing applications
Convert pressure to electrical output with Tecmark switches; range 2 inch w.c. to 100 PSIG, 25 amps. Various fittings and diaphragms. (read more)

Tecmark Corporation - Make any 120-volt outlet instantly switchable

LectricAir™ makes any 120 volt outlet instantly switchable. No electrical wiring or batteries are necessary! Tecmark®'s LectricAir™ technology uses air to switch electricity on and off... safely isolating the user from the electrical current. (read more)

Tecmark Corporation - OEM Pressure Switches for Air, Gas, and Liquids

Convert pressure to electrical output with Tecmark switches; range two-inch w.c. to 100 PSIG, 25 amps. Various fittings and diaphragms. (read more)

Tecmark Corporation - On/Off LectricAir® SAFPAC controls

LectricAir® SAFPAC controls are air actuated electrical switch systems that promote intrinsically safe control of electrical devices (read more)

Tecmark Corporation - Convert A Pressure Signal to an Electrical Output

Tecmark Pressure Switches are available in various configurations for gas, water, and air sensing applications. Tecmark switches can sense pressures as low as 2" w.c. up to 100 PSIG with electrical ratings up to 25 amps. Multiple sample fitting configurations and diaphragm materials are available without the need for custom manufacturing. (read more)

Tecmark Corporation - Safe Switching of Electrical Devices

Tecmark TBS Series Air Switches provide momentary or maintained on / off switching logic for a variety of electrical devices including motors, lights, or other equipment. (read more)

Tecmark Corporation - Industrial Grade LineGard 40 - 60 Amp Class A GFCI

The Linegard® 60-Amp GFCI product is designed to protect personnel & equipment in 208V, 3 Ø electrical circuits from hazardous current leakage at a Class A (5mA +/-1) level. Our permanent stand-alone GFCI’s are NEMA 4X wet location rated and cULus certified. MADE IN THE USA. North Shore Safety – A Tecmark Company (read more)

Tecmark Corporation - 20 Amp GFCI DESIGNED FOR HAZARDOUS ENVIRONMENTS

The LineGard® 20 Amp Portable Series is designed to protect personnel & equipment in single Ø electrical circuits from hazardous current leakage at a UL943 Class A (5mA +/-1) level. Our portable GFCI’s come standard with flying leads and are NEMA 4X & IP69K rated and cULus certified. MADE IN THE USA. North Shore Safety... (read more)

Tecmark Corporation - Pressure Switches for Air, Gas, and Liquids

Tecmark Pressure Switches are available in various configurations for air, gas and liquid sensing applications. Tecmark switches can sense pressures as low as 2" w.c. up to 100 PSIG with electrical ratings up to 25 amps. (read more)

Tecmark Corporation - On/Off Control for Electrical Devices

LectricAir® SAFPAC controls are air actuated electrical switch systems that promote intrinsically safe control of electrical devices. Typical Applications include any electrical device requiring on/off switching, including garbage disposers, drill presses, pumps, lights, farm equipment, industrial machines, lab devices, and more. (read more)

Tecmark Corporation - 30 Amp Permanent Series single & multiphase GFCI

The Linegard® 30-Amp GFCI product is designed to protect personnel & equipment in single/split/3 Ø electrical circuits from hazardous current leakage at a UL 943 Class A (5mA +/-1) level. Our permanent stand-alone GFCI’s are NEMA 4X wet location rated and cULus certified. MADE IN THE USA. North Shore Safety – A Tecmark Company (read more)

Tecmark Corporation - 30 Amp Portable Class A UL Listed GFCI

The Linegard® 30-Amp GFCI product is designed to protect personnel & equipment in single/split/3 Ø electrical circuits from hazardous current leakage at a UL943 Class A (5mA +/-1) level. Our portable GFCI’s come standard with flying leads and are NEMA 4X & IP69K (1Ø) or NEMA 6P (multiphase) rated and cULus c... (read more)

Tecmark Corporation - SPECIAL PURPOSE 60 Amp SPGFCI

The LineGard™ 60 Amp SPGFCI offers protection for nuisance applications such as welders, pumps, motors and generators that would normally trip a Class A, 6mA GFCI. (read more)

Tecmark Corporation - Tecmark TBS Series Air Switches

Tecmark TBS Series Air Switches are single function control switches that provide safe actuation of electrical devices from remote locations. Includes the TBS300 and TBS400 air switches. (read more)

Tecmark Corporation - Converting a Vacuum Signal to an Electrical Output

Series VTBS3000 switches provide control stability through wide variable temperature and humidity conditions and assure uninterrupted service under shock and vibration.

Series V4000 Vacuum Switches convert a negative pressure signal to an electrical output. (read more)

Tecmark Corporation - 30 Amp Permanent Series single & multiphase ELCI

The Linegard® 30-Amp ELCI/GFPE product is designed to protect personnel & equipment in single/split/3 Ø electrical circuits from hazardous current leakage at a designated setpoint of 10mA, 200mA, or 30mA. Our permanent mounted stand-alone ELCI’s are NEMA 4X wet location rated and cCSAus certified. MADE IN THE USA. North Shore... (read more)

Tecmark Corporation - Equipment Leakage Circuit Interrupter 40 - 60 Amp

The Linegard® 40-60 Amp Permanent ELCI/GFPE is Indoor/Outdoor Wet Location Rated (NEMA 4X Enclosure) and UL 1053 compliant. Custom assemblies available, including single/split/3 Ø configurations, 120V-600V, auto or manual reset, and key selectable trip levels of 6mA, 10mA, or 30mA. MADE IN THE USA. NORTH SHORE SAFETY - A Tecmark Company (read more)

Tecmark Corporation - 40-60 Amp Portable ELCI/GFPE
  • The Linegard® 40-60 Amp Portable ELCI/GFPE comes with plug/connector or flying leads. Indoor/Outdoor Wet Location Rated (NEMA 4X Enclosure) and UL 1053 complaint. Custom assemblies available, including single/split/3 Ø configurations, 120V-600V, auto or manual reset, and key selectable trip levels of 6mA, 10mA, or 30mA.<...
(read more)
Tecmark Corporation - Prevent Hazardous Electrical Leakage with ELCIs

North Shore Safety’s Linegard™ 30-Amp and 50-Amp Equipment Leakage Circuit Interrupter (ELCI) products that are made to prevent hazardous electrical leakage. (read more)

Tecmark Corporation - Marina Electrical Safety

Here are some best practices for how to make sure that you and everyone else by the water stays safe. (read more)

Tecmark Corporation - Linegard® EVSE2 EV Charging Station

The Linegard® EVSE2 is a 32-Amp movable/mounted EV charging station. The EVSE2 is cULus certified, comes standard with Class C (18 /- 2) GFCI protection and a NEMA 3R rainproof enclosure. MADE IN THE USA. (read more)