Safety switch

Safety switches are designed and manufactured to global standards with high reliability, stability and quality. Safety switches include limit switches, interlock switches and emergency stop switches.

1. Emergency stop equipment:

Our emergency stop equipment includes enabling switches and pull-wire switches. Our Lifeline™ range includes cable emergency stop switches and cable actuated emergency stop switches.

Handheld Enabling Switches: Bulletin 440J Handheld Switches can be used as part of the measures required to work safely within machine guards. They are lightweight, ergonomically designed and easy to use. Standard models include two independent three-position switches that are actuated by pressing a toggle. Other models have optional jog buttons or dual channel emergency stop buttons.

Wire Pull Switches: Bulletin 440 Series Wire Pull Switches feature a wire rope attached to a locking style wire pull switch. Pulling the wire rope in any direction at any point on the wire rope will trip the switch, cutting power to the machine. Choose from our Lifeline™ Cable Tensioning Systems (LRTS), Lifeline 3 cable (rope) operated emergency stop devices, Lifeline 4 cable/button operated systems, and stainless steel Lifeline 4 cable/button operated systems.

2. Safety interlock switch:

Our safety interlock switch is a safeguard that monitors the position of a guard or door. You can use them to cut power, control access, and prevent machines from starting when guards are open. Contains:

Protection lock switch:

Bulletin 440G Series Guard Lock Switches Our guard lock switches provide protection for hazardous areas that cannot be removed immediately after a stop request. On many machines, removing power to a motor or actuator does not immediately stop dangerous motion. Typical applications are high inertia rotating machines, fast rotating machines, and machines that require high pressure relief from air pressure valves.

The Atlas™ 5 Guard Lock Switch is a positive mode tongue type interlock switch. It latches machine guards until power is isolated, then keeps power isolated while the guard is open. With two safety (normally closed) contacts and two auxiliary (normally open) contacts, the Atlas 5 switch is suitable for PLC controlled machines.

The 440G-LZ protective lock switch is mainly used for protective doors involving partial body contact. The switch uses microprocessor technology with an RFID-encoded actuator. It also features a detent drive mechanism that only locks when the correct actuator is detected. Due to its complete functionality, the switch is Ple, Cat4 (EN/ISO 13849-1) certified by TÜV for the highest security level of guard door position and lock monitoring.

The 440G-MT Solenoid Switch is a positive-mode tongue-type protective interlock switch that latches machine guards until power is isolated, and then maintains power isolation while the guard is open. The guard can only be opened when a signal is applied to the internal solenoid that releases the locking mechanism.

The TLS-GD2 guard locking switch is a positive mode tongue type interlock switch. It latches machine guards until power is isolated, then keeps power isolated while the guard is open. The TLS-GD2 has three safety (normally closed) contacts and two auxiliary (normally open) contacts.

The TLS-Z GD2 Guard Lock Switch is an interlock switch featuring a uniquely coded RFID door sensor using inductive door position sensing technology. This switch detects if the actuator key is broken or detached from its door mounting position. Built using the same solid state technology as the TLS GD2, this switch supports the highest level of security - Performance Level "e" (Ple) in accordance with EN ISO 13849-1.

Hinged switch:

Our 440H Series Hinged Interlock Switches, when activated, will close a specific normally open (accessible) door or guard.

The Ensign 3 Hinged Interlock Switch is a hinge-actuated safety interlock switch that is mounted at the hinge point of the guard. With one rotatable head, the multipurpose Ensign 3 can be mounted in up to 4 ways.

Rotacam™ Heavy Duty Hinge Interlock Switches are hinge actuated safety interlock switches. They connect to existing hinge pins for direct switch operation. When the protective device opens exactly 5 degrees, it isolates the machine power supply. For applications requiring a larger operating angle, the internal cam can be adjusted from 5…11 degrees.

The Sprite Micro Hinge Interlock Switch is a hinge-actuated safety interlock with a compact cover measuring only 75 x 25 x 29 mm (2.95 x 0.98 x 1.14 in), making this switch the smallest interlock currently available. One of the lock switches. Sprite is suitable for small machines such as printing presses, copiers and household appliances, including necessary safety features.

Multifunctional Access Control Box:

Our Guardmaster® 442G Multifunction Access Control Box is a unique combination of protection lock and access control. This integrated safety guarding solution is ideal for applications involving full body guarding requiring strong door retention, high tolerance for door alignment and the ability to evacuate the guarded area in an emergency the occasion. A variety of operator controls and other options provide flexibility to meet a variety of applications.

Non-contact interlock switch:

Bulletin 440N Series Non-Contact Interlock Switches help you keep people and equipment safe. At the same time, flexibility and productivity are factors that you must also consider when designing your safety system. With non-contact interlocks, there is no physical contact between the switch and the actuator (under normal conditions).

SensaGuard™ non-contact interlock switches utilize the latest generation of RFID coding technology and inductive detection technology. These switches have a large detection range and misalignment tolerance. They are cost-effective solutions for a variety of industrial safety applications.

Our magnetically coded contactless interlock switches are versatile and easy to install with a molded bracket and small size. For high risk applications, the control unit will be used with a single sensor to provide a highly integrated system.

Ferrogard™ 1, 2, 20 and 21 Non-Contact Interlock Switches feature a plastic rectangular cover for use in wet environments. Magnetically actuated safety switches feature non-contact reliability and misalignment tolerance.

Ferrogard™ 3, 4 and 5 non-contact interlock switches have terminal connections. Magnetically actuated safety switches feature non-contact reliability and misalignment tolerance.

Ferrogard™ 6, 9, 10, 13, and 14 Non-Contact Interlock Switches feature a slim cover for tighter installation areas. They are environmentally sealed and rated to IP67 (NEMA 6P), making them suitable for use in wet environments. These Ferrogard switches feature two active sensing faces for more flexible installation.

Ferrogard™ GD2 Non-Contact Interlock Switches feature a stainless steel cover for added protection against accidental shock to the cover. The contacts are fully sealed to IP68 (NEMA 6P), making them suitable for use in wet environments. GD2s also have a wider temperature range than plastic Ferrogard switches, allowing them to be used in a wider range of applications.

Ferrogard™ GS1, GS2 Non-Contact Interlock Switches are suitable for heavy duty applications. The GS1 is available with a stainless steel or brass cover. The GS2 has the same features as the GS1, but with an explosion-proof cover for use in hazardous locations.

With a molded bracket and small size, the Sipha™ sensor is versatile and easy to install. The Sipha sensor must be connected to the Sipha control unit to provide the monitoring circuit. For high risk applications, the control unit will be used with a single sensor to provide a highly integrated system. For other applications, multiple sensors, including mechanical switches, can be connected to one Sipha control unit.

Tongue Interlock Switch: 

Bulletin 440K Series Tongue Interlock Switches have a swivel head that provides different options for how the switch is operated and mounted on guards. This flexibility is best for your application.

Our Cadet™ 3 Tongue Interlock Switches are reed or key operated safety interlock switches mounted on the leading edge of slide, hinge or lift guards. With dual inlet slots and rotatable heads, the versatile Cadet 3 has up to 8 different actuator inlet styles.

Our Elf™ Miniature Tongue Interlock Switches are reed or key operated safety interlock switches that are mounted on the leading edge of slide, hinge or lift guards. The unique miniature cover makes the Elf interlock switch one of the smallest switches of its kind currently available. This switch is suitable for small machines such as printers, copiers and household appliances, which until now have not been able to use safety interlocks due to space constraints.

Our MT-GD2 Tongue Interlock Switches are reed or key operated safety interlock switches mounted on the leading edge of slide, hinge or lift guards. With dual inlet slots and rotatable head, the MT-GD2 has 8 different actuator inlet styles.

Our Trojan™ 5 & 6 Tongue Interlock Switches (Universal) are general purpose reed or key operated safety interlock switches. They are installed on the leading edge of sliding, hinged or lifting guards. With dual key entry slot and rotatable head, and can only be moved by releasing the cover screw, these switches have 4 types of actuator entry.

Our Trojan™ T15 and T15-GD2 Tongue Interlock Switches are compact general purpose reed or key operated safety interlock switches mounted on the leading edge of slide, hinge or lift guards. With dual entry slots and a rotatable head that can only be moved by releasing the cover screws, these switches have 4 different actuator entry styles.

Safety key switch:

Bulletin 440T Series Safety Key Interlock Switches can be configured to ensure a predetermined sequence of events or reduce hazards before the operator is exposed to danger.

440T Proximity Control Chain: Our Proximity Chain Safety Key Interlock Switches allow access to hazardous areas only when the appropriate key is inserted in the interlock. With these stainless steel accessory interlocks, a reliable, industrial-grade method of door entry is achieved. They are driven by a lever or rod attached to a chain.

440T Interchange Unit: Our Safety Key Interlock Switch Interchange Unit is used to link other devices in the Prosafe® range together in an interlock sequence. These units are suitable for more complex sequences of operations.

440T Microvalve: For applications where space is limited, the Microvalve Safety Key Interlock Switch is the ideal solution. Features include lock on or lock off options.

440T Rotary: The rotary safety key interlock switch is used to electrically isolate the machine for increased access security, and can also be used as a teach pendant in robotic cells. After switching off the power, the key can be removed and used for the next sequence of operations (such as unlocking an inspection door or allowing access to a valve). The rotary switch can be panel mounted or included in a protective cover.

440T Latching: Latching™ Safety Key Interlock Switches combine the functions of a safety key with a reed actuated interlock. When the actuator is inserted into the interlock (lockout), it can be removed by turning the safety key. After removing the key, the actuator cannot be removed. This will lock the protective door. The safety key must be reinserted and rotated 90° to unlock the guard. Latching interlock switches are available in mechanical, electronic and solenoid types.

440T Solenoid Release Unit: Our Safety Key Electromagnetic Release Unit provides electrical isolation of the machine for increased security of entry. The unit consists of a rotary power switch and a solenoid. The safety key can only be removed when an external signal is given to its internal solenoid locking mechanism. When the safety key can be removed (i.e. the solenoid is energized), the indicator light on the electromagnetic release unit will illuminate. An electromagnetic signal is only required when the key needs to be removed.

440T Motion Stop Unit: Our Prosafe® Motion Stop Unit (SMU) is used in applications that require the detection of motion stop of mechanical parts of a machine. The SMU detects motion using inductive proximity sensors and monitors these sensors using the CU2 control unit.

440T Packaged Switch Adapters: Our Safety Key Packaged Switch Adapters are used for pre-interlocked packaged switch applications or other host equipment such as spool valves. After turning the key to remove it, the power is isolated and locked. The key is then available for the next sequence of operations.

440T Time Delay Unit: Our electronic time delay unit safety key interlock switches can be used in applications where access to hazardous areas is required over a period of time. This interlock switch uses a combination of SI Guardmaster® safety relays and EMD Guardmaster safety relays to perform timed sequences. The timer is started by turning the non-removable key. If the EMD times out, its output will energize the internal solenoid, which will allow either or both security keys to be removed.

440T Pin Type: Our pin type safety key interlock switches allow access to hazardous areas only when the appropriate key is inserted in the interlock. With these stainless steel pin interlocks, a reliable, industrial-strength method of door entry is achieved. With these pin interlocks, there is no need to install power wires on the door. These pin interlocks are available in mechanical, electronic and magnetic switch styles.

3. Safety limit switch:

The Bulletin 440P Limit Switch family provides a comprehensive international standard solution for safety and standard sensing applications. This range of limit switches is available in four housing styles: 30 mm metal, 22 mm metal and plastic, and 15 mm plastic. These switches are available in a wide variety of operating styles, circuit arrangements, and connections. The 440P is suitable for a wide range of general-purpose applications and safety protection applications.

Bulletin 440P 15 mm Plastic Safety Limit Switches provide the performance of a larger unit in the most compact housing. These switches have two mounting hole options to select the actuator position.

Bulletin 440P 22 mm Metal Safety Limit Switches feature a small metal housing with a choice of actuator contacts. All units come with an integrated two-meter cable. These switches comply with the EN 50047 standard.

Bulletin 440P 22 mm Plastic Safety Limit Switches are available in many options including quick action, slow break/close via 2 or 3 contact configurations, and a choice of actuator contacts. Contacts can be rotated (in 90° increments) prior to installation to facilitate installation. These switches comply with the EN 50047 standard.

Bulletin 440P 30 mm Metal Safety Limit Switches are available with many options including quick action, slow break/close with 2, 3 or 4 contact configurations and a choice of actuator contacts. Contacts can be rotated (in 90° increments) prior to installation to facilitate installation. These switches comply with the EN 50047 standard.

4. Heavy duty limit switch:

Our Bulletin 801 802 Heavy Duty Limit Switches are ideal for applications requiring heavy duty guide ratings, small size, and high versatility. We offer various operating heads and joysticks.

Bulletin 801 General Purpose Limit Switches are suitable for a variety of applications. Numerous contact arrangements are available, as well as slow-action and snap-action contact operating mechanisms. Snap-action limit switches have a high-speed switching force after the mechanism has passed the required distance.

Bulletin 802DN DeviceNet® Limit Switches have the same rugged features as the 802T NEMA Limit Switches with DeviceNet built in. This increases information flow, reduces DeviceNet network connection costs, and reduces downtime. These switches are configured using RSNetWorx® for DeviceNet.

Bulletin 802G Gravity Return Limit Switches are drop-in gravity return limit switches with extremely low operating torque.

Bulletin 802M Factory Sealed Limit Switches meet requirements for NEMA 1, 4, 6P and 13 enclosures. These switches are ideal for wet environments and washdown applications. We offer a wide range of operating heads and joysticks.

Bulletin 802MC Corrosion Resistant Limit Switches are pre-wired, factory sealed switches that provide corrosion protection in wet or dry locations. These switches feature a polymer housing and 316 stainless steel for exposed metal parts, providing robust protection against environmental contamination. They meet the requirements for NEMA 1, 4X, 6P and 13 enclosures.

Bulletin 802T Low Energy Limit Switches feature soldered gold-silver alloy contacts that provide a protective barrier against surface oxidation. These switches also incorporate prism-shaped cross contacts that provide high voltages that can penetrate external particles that prevent the contacts from closing.

Bulletin 802T Direct Open Limit Switches are used in ISO 14119 compliant safety applications. These limit switches have the same mounting dimensions as other NEMA style limit switches. Rugged metal construction and plug-in body are designed for harsh industrial environments. A direct open circuit ensures that the normally closed contact opens when the limit switch is actuated.

Bulletin 802T Oil Sealed Limit Switches offer heavy duty pilot ratings, small size, high versatility and rugged NEMA Type 13 oil sealed construction. Available in both plug-in and non-plug-in styles. The contacts and switch body of the plug-in limit switch can be replaced while the base of the wiring jack remains in place. This eliminates the need for rewiring when replacing switches, reducing downtime.

Bulletin 802X Watertight Limit Switches are within the limits of the NEMA Type 4 Watertight Enclosure Test to protect internal parts from splashing water or hose seepage. These switches are not protected against freezing rain or ice.