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This section provides an overview for safety plugs as well as their applications and principles. Also, please take a look at the list of 6 safety plug manufacturers and their company rankings. Here are the top-ranked safety plug companies as of January, 2025: 1.Häfele GmbH & Co KG, 2.Oseco Elfab, 3.SeaSense.
Table of Contents
A Safety Plug is a so-called interlock plug.
An interlock refers to something that restricts the movement of a machine or other equipment by making it a condition of operation.
Installing Safety Plugs in production and industrial equipment can stop their operation when a person unintentionally pulls out the Safety Plug. They are often installed in operating parts that may cause harm to people and play a very important role in ensuring the safety of workers.
Safety plugs are installed on the doors of safety enclosures situated along production lines, as well as on the doors of machine tools and industrial machinery. Some products are also installed in the operation panels of equipment and devices.
In the case of production lines, Safety Plugs are often employed as keys for safety doors. The Safety Plug cannot be easily pulled out while the production line is in operation. If a worker pulls out the Safety Plug while the production line is in operation, the production line will immediately stop operating, thus avoiding human casualties.
The Safety Plug acts as an interlock in the electrical connection.
Production lines are often line-controlled by PLCs. In this case, there are two types of interlocking: interlocking by logic circuits in the PLC program and interlocking by hardware connections such as IO communication.
The Safety Plug is connected to the PLC hardware (electrically), and it plays the role of an interlock using IO communication. When the Safety Plug is removed, the electrical connection is interlocked, and the PLC doesn't need to perform any logic calculations. Instead, it simply monitors the status of the electrical communication to determine the state of the Safety Plug. Thus, if the Safety Plug is pulled out, a process can be immediately implemented to shut down the production line.
To create an electrical connection, Safety Plugs integrated into safety doors often consist of two components, typically a key and a keyhole. These components are configured so that electrical communication is activated when the key is inserted into the keyhole and deactivated when the key is removed from the keyhole.
*Including some distributors, etc.
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Seasense is a manufacturer of marine products located in Urbandale, Iowa, and was founded in 1984. The company manufactures marine hardware, safety products, marine plumbing products, and trailer accessories. Some of its products include rail mounts, hand pumps, air horns, tail lights, and safety chains. It also offers anchors, marine electricals, lighting, and fuel and motor accessories. Its entire product line undergoes rigorous testing, and the company provides simple instructions for interactions with its products.
Häfele GmbH & Co KG was established in 1923 in Aulendorf, Württemberg, Germany, as a manufacturer of fittings and electrical locking systems. The company's product range includes various categories, such as furniture fittings, lighting, tools, and consumables. Its catalog features products such as the 3-part STARETEC hinges for glass doors, door handle sets, furniture handles, LED lights with silicone strips, and sinks with both small and large basins. These products find applications in various industries, including furniture, retail, carpentry, architecture, and more.
Oseco Elfab, a manufacturer of rupture discs established in 1946, is headquartered in Devon, UK. The company manufactures rupture discs (burst or pressure safety discs) and explosion venting solutions. These products are crucial for pressure relief and safety in various industrial applications where overpressure situations occur. Its discs are engineered to burst at a specific pressure, allowing excess pressure to be safely released from a system, thereby protecting equipment and personnel. The company's products are found across multiple industries, including oil and gas, chemical processing, pharmaceuticals, aerospace, and manufacturing.
ELMA INSTRUMENTS A/S, established in 2004 and headquartered in Farum, Denmark, is a distributor of test and measuring instruments. The company demonstrates its flair in delivering borescopes, solar measurement accessories, clamp meters, light meters, and motor testers. It also distributes plugs and sockets, reflectometers, smoke cartridges, voltage and magnet detectors, and voltage testers. Its borescopes which have probes with 6 mm diameter and the ability to connect probes of up to 3 m are used to perform inspection tasks, specifically to see hidden details.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Häfele GmbH & Co KG |
30.8%
|
| 2 | Oseco Elfab |
23.1%
|
| 3 | SeaSense |
15.4%
|
| 4 | Edmundson Electrical Limited |
15.4%
|
| 5 | BabyDan A/S |
15.4%
|
Derivation Method
The ranking is calculated based on the click share within the safety plug page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
1 | 50.0% |
|
Germany
|
1 | 50.0% |
26 products found
26 products
Fuki Co., Ltd.
100+ people viewing
Last viewed: 4 hours ago
Standard Response
■Features ・Your wallet, mobile phone, and IC card (FeliCa/Mifare) are the keys. There are 250 IDs that can be registered. ・You can change your pa...
Nagoya Tech Co., Ltd.
90+ people viewing
Last viewed: 41 minutes ago
Standard Response
■Summary This single MGBS can fully meet the requirements of the international standard ISO14119 for interlock devices and guard lock devices. Inte...
ITEC SOLUTION Co., Ltd.
190+ people viewing
Last viewed: 1 day ago
Standard Response
Designed for use with machines that are immediately secured when unlocked. Increase operator safety by attaching to hinged or sliding guard doors, ...
3 models listed
Sun Wise Co., Ltd.
260+ people viewing
Last viewed: 8 hours ago
Standard Response
Open doors, automatic doors, seat shutters, retrofitting electromagnet locks, pin -type solenoid locks, and other interlock options.
9 models listed
Sun Wise Co., Ltd.
690+ people viewing
Last viewed: 2 hours ago
Standard Response
The ISI series is a control panel specialized only for interlock control between the doors. From two simple door interlocks to the interlock of up ...
5 models listed
30+ people viewing
Last viewed: 16 hours ago
■Features ・Work can be done safely inside and outside the manhole. ・Do not use the product with heavy objects or with constant loads. ・For squar...
40+ people viewing
Last viewed: 1 day ago
■Features ・Work can be done safely inside and outside the manhole. ・Do not use the product with heavy objects or with constant loads. ・For squar...
30+ people viewing
■Features ・Work can be done safely inside and outside the manhole. ・Do not use the product with heavy objects or with constant loads.
IWATA MFG.CO.,LTD.
40+ people viewing
Last viewed: 9 hours ago
Very Fast Response
Sun Wise Co., Ltd.
190+ people viewing
Standard Response
San Wise has not only interlock control between doors, but also interlock control linked to various types of equipment, such as air conditioning de...
