The Model 261 series Alternating Relay is designed for duplex pumping systems where it is desirable to equalize pump run time. The solid-state alternating circuit drives an internal electromechanical relay. A continuous power source and control switch are required.
The control switch (float, pressure or other isolated contact) is connected between the L1 terminal and the control terminal. Each time the control switch is opened the output contacts will change states. Indicator lights on the case show the internal relay status.
On the optional toggle switch versions, the toggle switch is set to the ALTERNATE position. Setting the switch to Load 1 or Load 2 will lock the relay in position, preventing alternation.
Model | 261x(T)-xxx | |||
| Supply Voltage | 12V AC/DC | 24V AC/DC | 120V AC/DC | 240V AC/DC |
| Voltage Range | 10-14V | 20-28V | 90-130V | 180-250V |
| Max. Voltage | 15V | 30V | 140V | 260V |
| Supply Current | 0.1A | 0.05A | 0.01A | 0.01A |
| Control Current | 0.001 amp | |||
| Operating Duty | Continuous | |||
| Min. Cycle Time | 100 msec | |||
| Contacts | 10A at 10 msec | |||
| Expected Relay Life | Mech: 10 million operations Elec: 100,000 operations at rated load | |||
| Operating Temp | 240V models: -40° to +131°F All other models: -40° to +140°F | |||
| Humidity Tolerance | 0-97% w/o condensation | |||
| Mounting | 261D: 11-pin socket* 261S or 261DX: 8-pin socket** | |||
| Enclosure Material | ABS Plastic | |||
| Weight | 4.3 oz. | |||
| Agency Approvals | UL Recognized and CSA Certified | |||
*order 11-pin socket #51X016
**order 8-pin socket #51X120
ORDERING INFORMATION | |||
MODEL | RELAY POLES | TOGGLE | SUPPLY VOLTAGE |
261 | S=single pole | T | 12 V AC/DC |
D=double pole | 24 V AC/DC | ||
DX=dbl pole x-wired | 120 V AC/DC | ||
240 V AC/DC | |||
EXAMPLE: 261-DX-120 orders 120V AC/DC; double-pole, | |||
