Smart Multifunction Monitoring Relays
Remotely control these relays through an app on your smartphone—they simultaneously monitor phase, voltage, and frequency. The downloadable app lets you change the tripping range, modify settings, and save programs to apply to multiple relays. Tap your smartphone or tablet to the relays to connect to them. They use NFC (near field communication), so you don’t need to manually pair them like Bluetooth devices.
You’ll often see these relays used to protect motors, generators, and other three-phase circuits from burning out or overheating. They'll switch the circuit off if they detect voltage or frequencies outside of the set range or phase loss, imbalance, or reversal. You can see that they're wired correctly and when they're actuated based on the LED indicators. Rated IP20, they have recessed terminals that keep fingers and other objects from touching live circuits. Mount them on a 35 mm DIN rail (also known as DIN 3 rail) for fast installation.
Trip Voltage | Trip Frequency | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage  | Min. | Max. | Input Frequency, Hz | Min., Hz | Max., Hz | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Operating System Compatibility | Each | |
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | ||||||||||||||||
With Screw Terminals | ||||||||||||||||
| 12 | 208V AC, 240V AC, 300V AC, 480V AC | 208V AC | 480V AC | 50, 60 | 45 | 66 | 0.1-60 | Automatic | 8 A @ 240 V AC | 250V AC | 3.5" | 0.9" | 3.9" | Android 7.0 or Later, iOS 14.5 or Later | 0000000 | 0000000 |
Multifunction Monitoring Relays
Monitor phase, voltage, and frequency at the same time to protect motors, generators, and other three-phase circuits from burning out or overheating. They'll switch the circuit off if they detect voltage or frequencies outside of the set range or phase loss, imbalance, or reversal. Rated IP20, they have recessed terminals that keep fingers and other objects from touching live circuits. Mount them on a 35 mm DIN (also known as DIN 3 rail) for fast installation.
These relays use IO Link, so they can be programmed, monitored, and reset remotely by connecting them to a programmable logic controller (PLC), human-machine interface (HMI), or computer. If you want to program them locally, they have a keypad.
Relays with spring-clamp terminals connect and disconnect to wire without screws. Because there’s no screw, these connections are less likely to loosen over time, even in high-vibration environments.
Trip Voltage | Trip Frequency | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Min. | Max. | Input Frequency, Hz | Min., Hz | Max., Hz | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Style | Ht. | Wd. | Dp. | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||||||
With Screw Terminals and IO Link | ||||||||||||||||
| 12 | 24V DC | 90V AC | 760V AC | 50, 60 | 15 | 70 | 0.1-30 | Automatic | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 3.9" | 0.9" | 3.6" | 0000000 | 0000000 |
With Spring-Clamp Terminals and IO Link | ||||||||||||||||
| 12 | 24V DC | 90V AC | 760V AC | 50, 60 | 15 | 70 | 0.1-30 | Automatic | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 3.9" | 0.9" | 3.6" | 0000000 | 000000 |
Frequency-Monitoring Relays
Prevent changes in frequency from damaging sensitive equipment. Often used with motors, fluorescent lighting, and controllers, these relays cut power to your device if the frequency falls outside the set range. Switches on the front of these relays let you set your trip frequency and time. You can see that they're wired correctly and when they're actuated based on the LED indicators. Rated IP20, these relays have recessed terminals that keep fingers and other objects from touching live circuits.
DIN-rail mount relays snap onto 35 mm DIN rail (also known as DIN 3 rail) for fast installation.
Relay-socket mount relays plug into a socket (sold separately), which is required for installation.
Relays | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trip Frequency Setting | Relay Sockets | |||||||||||||||
| No. of Terminals | Input Voltage | 50 Hz Input | 60 Hz Input | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Style | Ht. | Wd. | Dp. | Features | Each | Each | ||
1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||||||
DIN-Rail Mount | ||||||||||||||||
| 9 | 24V AC, 48V AC, 120V AC, 240V AC | 40-60 Hz 48-52 Hz | 50-70 Hz 58-62 Hz | 0.1-30 | Automatic, Manual | 8 A @ 240 V AC 5 A @ 24 V DC | 250V AC 24V DC | DIP Switch | 3.1" | 0.9" | 3.9" | LED Indicator | 0000000 | 0000000 | 000000 | 00 |
Relay-Socket Mount | ||||||||||||||||
| 1 | 24V AC, 48V AC, 120V AC, 240V AC | 40-60 Hz 48-52 Hz | 50-70 Hz 58-62 Hz | 0.1-30 | Automatic, Manual | 8 A @ 240 V AC 5 A @ 24 V DC | 250V AC 24V DC | DIP Switch | 3.1" | 1.4" | 3.7" | LED Indicator | 0000000 | 000000 | 0000000 | 000000 |