reorganised to reduce or remove manual workstations and migrate production onto automated machinery for through-hole assembly. A comparison of production techniques suggests that soldered terminals can reduce the bill of materials (BOM) including busbars and screws by up to 35%, while assembly-process costs can be reduced by as much as 50%. The benefits gained through automated assembly become more significant as production is scaled to larger volumes. In addition, changing to PCB relays can
enhance product performance and improve energy efficiency. The lower contact resistance of these relays leads to reduced I2R losses and heating thereby extending contact reliability. In addition, the coil power is lower, contributing further to increased efficiency. OMRON’s high-current PCB relays include
the single-pole G9KA-1A1B-E, which can carry up to 300A and has main contact resistance less than 0.2mΩ. The design of the mechanism and the materials selected contribute to the low resistance and also permit a contact gap of 4.0mm ensuring high performance with safety. There is also a 30V/1A mirror contact structure built-in to provide weld detection meeting IEC 60947-4-1, the international standard for
electromechanical contactors and starters including motor protective switching devices. Overall, while moving to PCB-mounted solutions requires upfront investment, vendors gain significant long-term payback in cost, efficiency and reliability.
Electromechanical contactors are historically accepted as the kings of high-current switching, covering a wide range of ratings up to hundreds of Amps. While their strengths also include auxiliary fault-detection contacts, there are disadvantages. Devices tend to have a large and heavy coil and contact mechanism, which adds bulk and limits switching frequency, while manual assembly methods slow production and allow scope for human error. New demands arising from electrification
are driving innovations in PCB relays that elevate current-handling capability and provide built-in fault detection, presenting a new option in the 50-300A range that permit more compact, reliable, efficient, and cost-effective power control.
Are you looking to reach out to Design Engineers, Senior Buyers and
Managers? As well as Specifiers within the Energy, Automotive, Aerospace, Medical, Power Industries and much more!
To discuss the wide array of promotional opportunities, CONTACT Jordan Tait |
jtait@datateam.co.uk | 01622 699 139
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