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Trip Frequency
Smart Multifunction Monitoring Relays
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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.
No. of Terminals | Input Voltage, V AC | Trip Voltage, V AC | Input Freq., Hz | Trip Freq., Hz | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage, V AC | Ht. | Wd. | Dp. | Operating System Compatibility | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2 Circuits Controlled with 2 Off or 2 On—DPDT | ||||||||||||||||
With Screw Terminals | ||||||||||||||||
| 12 | 208, 240, 300, 480 | 208 to 480 | 50, 60 | 45 to 66 | 0.1 to 60 | Automatic | 8 amp @ 240V AC | 250 | 3.5" | 0.9" | 3.9" | Android 7.0 or Later, iOS 14.5 or Later | 8452N11 | 0000000 | ||
Multifunction Monitoring Relays
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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 rail (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.
Spring-Clamp-Terminal Wire Connection—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.
No. of Terminals | Input Voltage, V DC | Trip Voltage, V AC | Input Freq., Hz | Trip Freq., Hz | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Mechanism | Ht. | Wd. | Dp. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 Circuit Controlled with 1 Off or 1 On—SPDT | ||||||||||||||||
Screw Terminals with IO-Link | ||||||||||||||||
| 12 | 24 | 90 to 760 | 50, 60 | 15 to 70 | 0.1 to 30 | Automatic | 3 amp @ 240V AC 1 amp @ 24V DC | 400V AC 250V DC | External Controller, Keypad | 3.9" | 0.9" | 3.6" | 8449N12 | 0000000 | ||
Spring-Clamp Terminals with IO-Link | ||||||||||||||||
| 12 | 24 | 90 to 760 | 50, 60 | 15 to 70 | 0.1 to 30 | Automatic | 3 amp @ 240V AC 1 amp @ 24V DC | 400V AC 250V DC | External Controller, Keypad | 3.9" | 0.9" | 3.6" | 8449N11 | 000000 | ||
Frequency-Monitoring Relays
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DIN-Rail Mount | Relay-Socket Mount |
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—DIN-rail mount relays snap onto 35 mm DIN rail (also known as DIN 3 rail) for fast installation.
Relay-Socket Mount—Relay-socket mount relays plug into a socket (sold separately), which is required for installation.
Monitoring Relays | Sockets | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trip Frequency Setting, Hz | ||||||||||||||||||
No. of Terminals | Input Voltage, V AC | 50 Hz Input | 60 Hz Input | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Mechanism | Ht. | Wd. | Dp. | Features | Each | Each | ||||
1 Circuit Controlled with 1 Off or 1 On—SPDT | ||||||||||||||||||
DIN-Rail Mount | ||||||||||||||||||
| 9 | 24, 48, 120, 240 | 40 to 60 48 to 52 | 50 to 70 58 to 62 | 0.1 to 30 | Automatic, Manual | 8 amp @ 240V AC 5 amp @ 24V DC | 250V AC 24V DC | DIP Switch | 3.1" | 0.9" | 3.9" | LED Indicator | 8477N11 | 0000000 | ——— | 0 | ||
Relay-Socket Mount | ||||||||||||||||||
| 1 | 24, 48, 120, 240 | 40 to 60 48 to 52 | 50 to 70 58 to 62 | 0.1 to 30 | Automatic, Manual | 8 amp @ 240V AC 5 amp @ 24V DC | 250V AC 24V DC | DIP Switch | 3.1" | 1.4" | 3.7" | LED Indicator | 8477N12 | 000000 | 7122K12 | 000000 | ||
