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Allen Bradley 1756-DNB ControlLogix DeviceNet Bridge Module A-B 1756DNB
Any part can fail, including the switches in a master control relay circuit. The
failure of one of these switches would most likely cause an open circuit, which
would be a safe power-off failure. However, if one of these switches shorts
out, it no longer provides any safety protection. These switches should be
tested periodically to assure they will stop machine motion when needed.
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We offer 12 month warranty after receiving parcels. If there are some workmanship or material defects with the products, please contact us firstly, we will exchange it or offer other solutions for you to make a choice.
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