50R-400-ALT繼電器的功率繼電器高于2A規(guī)格書PDF中文資料

Description

The 50R-400-ALT alternating relays are used to alternate

between two loads, most commonly in duplex pumping and

compressor applications to balance the runtime of both loads.

When used in single float applications, the alternating relay

changes state after the float switch opens*, forcing the other

pump to run the next time the float closes. When used in dual

float applications, the alternating relay will allow both pumps to

run simultaneously when the lead and lag floats are both closed.

An adjustment knob provides the option to force one pump to

run every time the float switch is closed. This is helpful when

one pump has been removed for repair or for test purposes.

A built-in debounce feature prevents the alternating relay from

changing state if the float contact bounces momentarily.

*The alternating relay will not switch states while current is flowing. Switching will only occur

after current has been sensed, followed by loss of current for the duration of the debounce

time delay.

Features & Benefits

FEATURES BENEFITS

Debounce time delay Prevents rapid cycling caused by waves or

splashing in the tank

LED indicators Visual indication of load operation in

duplex application

Built-in manual switch

to force load operation

Helpful to control load operation when

performing periodic maintenance or pump repair

Operates from

380–480 V ac

No transformer required to provide 120–240 V for

control circuit