SAFETY INTERLOCKS PRODUCT CATALOGUE 2025 - 2026

“It always seems impossible until it’s done.

i/#AREL ANNIVERSARY YOUR SAFITY PARTND The Company The company, born in 1965, has over 60 years of experience in the market of handles, locks and mechanical interlocking systems production for MT/AT electric implants. The lock brand AREL® is largely recognized as the setting reference of mechanical and electromechanical interlocks. Quality and flexibility in the production of personalized solutions are strength points that gave us the opportunity to occupy a significant, and constantly growing, place in the market. Project of 1982, made in Venezuela. Arel interlocks are included in the design...

ANNIVERSARY YOUR BAFWTY PARTNIR History 1969 AREL introduces for the first time in Italy the installation of high-voltage cables using the “pre-corded” cable system, an innovative technology that increases capacity and speeds up installation times. The pilot project was carried out in Pavia. ‘70 Copper-aluminum cable lugs, hinges, and enclosures locks are just some of the products through which AREL strengthens its presence on the national market. AREL goes beyond national borders and becomes one of the first Italian companies to invest in the web, launching its website arelfrigo.it. Its reputation...

ANNIVERSARY YDUR SAFITY PARTNIR NEW AREL SRL is established through the transfer of a business branch from AREL di Frigo Tullio. A period of strong international growth begins, leading to the development of commercial partnerships with agencies in America, China, and the USA. AREL® is a registered trademark that can proudly claim to have reached and sold in all five continents. AREL®’s entry into the Heavy Duty interlock market marks a significant step in completing its product range and meeting the needs of the international market. This move demonstrates AREL®’s ability to adapt to industry...

YOUR BAFWTY PARTND Safety interlocksAn interlock is a closed and interconnected system of locks and elements for the sequential distribution of keys. LOCKING KEYS ACCESSOPERATION DISTRIBUTION CONTROL Description The fundamental element of the word “interlock” is the prefix “inter”, through which the idea of interconnection of elements and sequentiality of the key distribution is conveyed. Without interconnection and sequentiality, we lose the systemic dimension which differentiates interlocks from simple locks. Through interconnections and sequentiality of key distribution it is possible to design...

can be considered unique as it is the only one (together with its copies, if requested by the customer) containing the sequence required to open the lock. This dimension guarantees that, during the passage from one element to the other, the “witness” is unequivocally linked to this element of the system. The second dimension through which uniqueness and interconnection are created is constituted by the functioning mechanism of each single element of the system (the tumbler) which has two possible positions: These two positions represent the founding elements of the interlocking language, to which...

APPLICATION EXAMPLES Access Control

Application examples ISOLATION Integrated security system for access control to hazardous areas DPN2 Dual interlocked key access interlock Application description The key switch for disconnectors has been designed to be restarted until the door is closed and the key is removed function as part of an integrated safety system combined to be reinserted into the operating lock (disconnector key with access control to hazardous areas. Typical machines that use the key switch on disconnectors are those at high risk, where complete power isolation is required before access is allowed. The removal of...

Application examples ISOLATION Machine Guarding DP1 Single key door lock DC1 Powersafe electrical switch Application description A typical application for the protection of environments and machinery with a single access point involves the use of an electrical switch with single-key operation. It is usually used in conjunction with a single-key access unlocking device. The key-operated electrical switch interrupts the machine’s safety circuit, ensuring that the machine is locked when the key is turned and removed. The key can then be inserted into the access unlocking lock to open the door or...

Application examples ISOLATION Protection of machinery with multiple access to hazardous areas D1BCPX Elec tromechanical interlocking distributor DPN2 Dual interlocked key access interlock Application description A typical application for the protection of environments exchanger can the isolation key be released to restart the and machinery with multiple access points involves the use of an electrical operating lock in combination with a key exchanger and a single-key or double interlocked key access device for full-body entry. The typical interlocking system operates by isolating the machinery...

Application examples ISOLATION Access control for uninterruptible power supply (UPS) systems Application description A typical application for controlling the maintenance it guarantees continuity of power to the critical load bypass procedure of an uninterruptible power supply through the maintenance bypass switch, without the risk of accidental disconnections or incorrect procedures. The purpose is to prevent the UPS from being improperly taken offline during maintenance operations. Under normal operating conditions, the maintenance output switch is closed and the critical load is supplied through...

Application examples ISOLATION Security systems for safe control of switches or valves that prevent access to dangerous areas DPN2 Dual interlocked key access interlock Application description These are safety systems that use mechanical key position and ensuring that the earth connection cannot be interlocks. While the system is powered, the access interrupted. The system is now isolated and earthed, and doors to the hazardous area remain locked. Key A is Key B can be used to operate the access unlocking lock trapped in lock (1) while the process is active and the on the door to the hazardous...