Get A Quote
My Account
To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | ATC Diversified |
| Manufacturer Product Number | ARM-120-AFE |
| Description | Alternating Relay; Sequence On, Simultaneous Off; 120V AC |
| Datasheet | Download Datasheet |
The ATC Diversified ARM-120-AFE is a duplex alternating controller for a 120 V AC supply. Its float or pressure switches bring two loads on one after the other, and it drops them all together when the off switch opens; the lead load alternates every cycle, so the run time evens out.
Inputs: five intrinsically safe switch inputs: AUX OFF, OFF, LEAD, LAG and high-level alarm. Selector switch: lead select (alternate, or lock 1-2 or 2-1), H-O-A switch per load, test / clear. Inrush delay: 5 s between load starts. Supply tolerance: ±10% of nominal; 50/60 Hz. Power: 4 VA max.
Output: 3 x SPST-NO (two loads, one alarm), 10 A resistive, 1/4 HP; 55 VA inductive at 24 V AC, 278 VA inductive at 120 V AC. Mounting: surface mount, #8-32 screw terminals. Indicator: LEDs for each control input, both loads, the alarm and a control-switch failure. Approvals: UL Listed (E151578); intrinsically safe inputs per UL913 (7M26). It operates from -20 to +55 °C and stores from -40 to +85 °C.
| Category | |
| Manufacturer | ATC Diversified |
| Model | ARM |
| Alternating Function | Sequence On, Simultaneous Off |
| Number of Loads | 2 |
| Control Inputs | Five intrinsically safe switch inputs: AUX OFF, OFF, LEAD, LAG and high-level alarm |
| Selector Switch | Yes -- lead select (alternate, or lock 1-2 or 2-1), H-O-A switch per load, test / clear |
| Input Voltage | 120V AC |
| Input Operating Range | ±10% of nominal; 50/60 Hz |
| Contact Configuration | 3 x SPST-NO (two loads, one alarm) |
| Output Rating | 10 A resistive, 1/4 HP; 55 VA inductive at 24 V AC, 278 VA inductive at 120 V AC |
| Number of Poles | 3 |
| Status Indicator | LEDs for each control input, both loads, the alarm and a control-switch failure |
| Mounting Type | Surface Mount |
| Termination Style | Screw Terminal (#8-32) |
| Start Delay Between Loads | 5 s inrush delay |
| Rated Power | 4 VA max |
| Operating Temperature | -20...+55 °C (-40...+85 °C) |
| Mechanical Life (Electrical) | 10,000,000 (50,000) |
| Approvals | UL Listed (E151578); intrinsically safe inputs per UL913 (7M26) |