Safety Relays
Receive signals from safety monitoring relays or controllers to switch devices off and on because of a system failure. Also known as force-guided or mechanically linked contacts, the interlocking opposing contacts on these relays cannot be open or closed at the same time. To keep your system from receiving false switching signals, the interlocking opposing contact must remain open even if a contact welds closed.
IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. These relays have been tested to safety standards that can help you achieve your system's PL (performance level) and SIL (safety integrity level). Choose a relay with a PL and SIL rating to meet the needs of your system. Higher ratings indicate greater safety protection. As your system becomes more complex, you generally require a higher safety protection level. Mount them to 35mm DIN rail (also known as DIN 3 Rail).
Relays that meet SIL3 are tested for applications with a probability of failure of 0.01% to 0.1% and are used for preventing fires, explosions, or toxic releases.
When a failure is detected, relays with self-monitoring circuitry signal the controller to remove power and prevent restarting until the issue is resolved.
Relays with nondetachable contacts have auxiliary contacts that won’t separate from the relay if there is shock or vibration. Relays with mirror auxiliary contacts have contacts that are normally closed and cannot be open at the same time as a normally open main contact.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage  | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Auxiliary Contact Switch Starting Position | Ht. | Wd. | Dp. | Features | Each | |
With Spring-Clamp Terminals—DIN-Rail Mount | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO | |||||||||||
| 18 | 24V AC, 24V DC | 5 | 5 A @ 120 V AC | 230V AC | 1 On (Normally Closed) | 3.9" | 0.9" | 4.8" | Interlocked Opposing Contacts, Recessed Terminals, Self-Monitoring Circuitry, Nondetachable Auxiliary Contacts, Mirror Auxiliary Contacts, LED Indicator | 00000000 | 0000000 |
Voltage-Monitoring Relays
Safeguard your equipment against overheating, wear, and malfunction from a spike or dip in voltage. These relays continuously monitor your AC or DC power supply and trip when the voltage is outside a set range. Rated IP20, these relays 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.
Relays with IO link 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.
For technical drawings and 3-D models, click on a part number.
Trip Voltage | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Min. | Max. | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Style | Ht. | Wd. | Dp. | Display Type | Features | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | |||||||||||||||
With Screw Terminals | |||||||||||||||
| 9 | 24V DC | 10V AC/DC | 600V AC/DC | 0-999 | Automatic | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 3.6" | 0.9" | 3.6" | LCD | Remote Reset | 00000000 | 0000000 |
With Spring-Clamp Terminals | |||||||||||||||
| 9 | 24V DC | 10V AC/DC | 600V AC/DC | 0-999 | Automatic | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 3.8" | 0.9" | 3.6" | LCD | Remote Reset | 00000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
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 |
Current-Monitoring Relays
Protect electrical equipment from overcurrent and undercurrent damage—these relays continuously monitor current flow. When current is outside a set range, they trip and cut power to prevent overheating, fire hazards, and stalling. Rated IP20, these relays 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.
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.
Relays with IO link 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.
For technical drawings and 3-D models, click on a part number.
Trip Current | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Terminals | Input Voltage | Min. | Max. | Trip Time, sec. | Reset Type | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Style | Ht. | Wd. | Dp. | Display Type | Each | |
Screw Terminals with IO Link | ||||||||||||||
1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||||
| 9 | 24V DC | 0.05A | 10A | 0-999 | Automatic | 1 A @ 24 V DC 3 A @ 240 V AC | 400V AC 250V DC | External Controller, Keypad | 3.6" | 0.9" | 3.4" | LCD | 0000000 | 0000000 |
Spring-Clamp Terminals with IO Link | ||||||||||||||
1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||||
| 9 | 24V DC | 0.05A | 10A | 0-999 | Automatic | 1 A @ 24 V DC 3 A @ 240 V AC | 400V AC 250V DC | External Controller, Keypad | 3.8" | 0.9" | 3.4" | LCD | 0000000 | 000000 |
Ground-Fault Monitoring Relays
Detect and mitigate ground faults to prevent harm to equipment, circuits, and people. These relays monitor the differential between incoming and outgoing current, also known as residual current. When the balance is off, they trip and cut power to the circuit. These relays are highly sensitive, so you can trust them to de-energize faulty circuits before a minor issue becomes a major one. Rated IP20, they have recessed terminals that keep fingers and other objects from touching live circuits. Mount them on 35 mm DIN rail (also known as DIN 3 rail) for fast installation.
These relays require a current-indicating ring (sold separately) to operate. Choose a ring that is large enough for your lines to pass through. Feed the lines of the circuit through the center of the ring and connect the indicating ring output to the relay.
Relays with spring-clamp terminals connect and disconnect to wire without screws. Because they don’t have screws, there’s less of a risk that they will loosen over time, even when they’re under vibration.
Relays with IO link 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.
For technical drawings and 3-D models, click on a part number.
Trip Current | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Terminals | Input Voltage | Min. | Max. | Trip Time, sec. | Switching Current @ Voltage | Max. Switching Voltage | Adjustment Style | Ht. | Wd. | Dp. | Features | Each | |
Screw Terminals with IO Link | |||||||||||||
2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | |||||||||||||
| 12 | 24V DC | 0.03A | 40A | 0-999 | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 4" | 0.9" | 3.6" | Remote Reset | 00000000 | 0000000 |
Spring-Clamp Terminals with IO Link | |||||||||||||
2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | |||||||||||||
| 12 | 24V DC | 0.03A | 40A | 0-999 | 3 A @ 240 V AC 1 A @ 24 V DC | 400V AC 250V DC | Keypad, External Controller | 4.1" | 0.9" | 3.6" | Remote Reset | 00000000 | 000000 |
