Switching current of a reed contact, measured in Amperes, is the maximum current a reed contact can switch.
The switching current of a reed contact can range from as low as 1 fempto-amp up to 5A using special contact materials. When switching current of a reed contact is at its maximum specified limit, the arcing happening during operation will degrade the contact and consequently shorten the life. Subjecting a reed contact to a higher currents than what it is rated for can cause a weld or early failure.
