Force guided relays are key electromechanical switching components used within safety relay circuits. They enable the recognition of a contact’s switching condition in a simple and safe manner.
With the normally open (NO) and normally closed (NC) contacts of a force guided relay being insulated from each other, the load and monitoring circuit may have different voltage potentials. This simplifies monitoring, as the same relay can switch line voltage with one set of contacts and switch a DC signal to the microprocessor with another.
Force guided relays are designed to switch outputs of safe PLCs (programmable logic controllers) for automation and control, to monitor railway signals, to provide information related to the opening of an elevator door, and for use in monitoring machines and processes.
The specific details entitling force guided relays to monitor a switching state safely are described by EN 50205. By this, force guided relays can be used to achieve the required functional safety level by applying the highest diagnostic coverage according to IEC 61508-2. In most markets, if relays are used for safe monitoring, they must be force guided relays according to EN 50205.
TE Connectivity’s relay products division offers the SR2M, SR4M and SR6 two-, four- and six-pole models for such applications. Small in size, they are offered with PCB terminals and special types and modules are available.
Compact switching joystick Brabek
Switches, Relays & Keypads
The MHS Series from Ruffy Controls is a momentary four-way or eight-way switching joystick with an optional pushbutton validation feature.
Read more...SMD choke for currents up to 48 A Electrocomp
Passive Components
Designed for rated currents from 36 to 48 A, these surface-mountable components from TDK cover a range of inductance values from 2,3 to 8,5 µH.
Read more...Advanced electrolytic hybrid capacitor Electrocomp
Passive Components
Online Teaser: The capacitor series from Panasonic achieves a maximum ripple current of 3,3 to 4,6 A, which is approximately 50% higher than comparable case sizes.
Read more...Swing-out industrial wall-mount rack cabinet Electrocomp
Enclosures, Racks, Cabinets & Panel Products
Hammond Manufacturing’s new industrial wall-mount rack cabinet offers dual access to equipment via the double hinge design.
Read more...Antennas to meet all connectivity requirements Electrocomp
Telecoms, Datacoms, Wireless, IoT
Kyocera AVX RF antennas meet today’s connectivity demands in the LTE, Wi-Fi, Bluetooth, GNSS, and ISM wireless bands, available in surface mount, patch or external configurations.
Read more...Stainless steel pushbutton enclosures Electrocomp
Enclosures, Racks, Cabinets & Panel Products
he HYPB series from Hammond is a hygienic type 4X stainless steel pushbutton enclosure designed for use in environments where regular high temperature, high-pressure washdowns are required.
Read more...SMD varistors with huge surge current capability Electrocomp
Power Electronics / Power Management
TDK Corporation has introduced two new varistor series in SMD design, the larger of the two capable of handling a surge current of 10 000 A.
Read more...Sealed tantalum capacitors Electrocomp
Passive Components
With an operating temperature range of -55 to 125°C, with voltage derating, these capacitors have been designed especially for avionics and aerospace applications.
printer friendly version