About Motor Switches and Starters
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Surface-Mount Motor Voltage Monitors
![](/prerenderstable/mvPRE/contents/gfx/imagecache/763/7632k74p1-d01c-digital@halfx_637098666372628196.png?ver=imagenotfound)
Protect electric motors from phase loss, phase reversal, overvoltage, undervoltage, and voltage imbalance. Also known as voltage-monitoring relays, these monitors cut power to a motor when a fault occurs.
For technical drawings and 3-D models, click on a part number.
Trip Time, sec. | Switching | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Input Voltage Range | No. of Terminals | Control Power, W | Voltage Imbalance Adjustment | Automatic Reset | Delayed Automatic Reset | Current, A | Voltage | Ht. | Wd. | Specifications Met | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||
Three Phase | ||||||||||||
190-480V AC | 7 | 6 | 2%-8% | 1-30 | 1-500 | 10 | 240V AC | 3.5" | 2.08" | UL Listed | 0000000 | 0000000 |
475-600V AC | 7 | 6 | 2%-8% | 1-30 | 1-500 | 10 | 240V AC | 3.5" | 2.08" | UL Listed | 0000000 | 000000 |
DIN-Rail Mount Motor Voltage Monitors
![](/prerenderstable/mvPRE/contents/gfx/imagecache/696/6969k52p1-d01c-digital@halfx_637098784427889787.png?ver=imagenotfound)
Mount these monitors to 35 mm DIN rail. They protect electric motors from phase loss, phase reversal, overvoltage, undervoltage, and voltage imbalance. Also known as voltage-monitoring relays, they cut power to a motor when a fault occurs.
For technical drawings and 3-D models, click on a part number.
Switching | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Input Voltage Range | No. of Terminals | Control Power, W | Voltage Imbalance Adjustment | Trip Time, sec. | Reset Type | Current, A | Voltage | Horsepower @ Voltage | Ht. | Wd. | Specifications Met | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | |||||||||||||
Three Phase | |||||||||||||
200-480V AC | 9 | 5 | 2%-10% | 1-30 | Automatic | 10 | 240V AC | 1/3 hp @ 240 V AC | 3" | 2" | UL Listed, C-UL Listed | 0000000 | 0000000 |
Socket-Mount Motor Voltage Monitors
![](/prerenderstable/mvPRE/contents/gfx/imagecache/697/6973k73p1-d01c-digital@halfx_637098977540981425.png?ver=imagenotfound)
Plug these monitors into relay sockets for fast installation and replacement. They protect electric motors from phase loss, phase reversal, overvoltage, undervoltage, and voltage imbalance. Also known as voltage-monitoring relays, they cut power to a motor when a fault occurs.
Relay sockets (sold separately) mount to 35 mm DIN rail or flat surfaces.
Voltage Monitors | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Switching | Relay Sockets | |||||||||||||
Input Voltage Range | No. of Terminals | Control Power, W | Voltage Imbalance Adjustment | Trip Time, sec. | Reset Type | Current, A | Voltage | Ht. | Wd. | Specifications Met | Each | Each | ||
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||||
Three Phase | ||||||||||||||
200-480V AC | 8 | 5 | 2%-10% | 0.25-30 | Automatic | 10 | 240V AC | 2.4" | 1.8" | UL Recognized Component, CSA Certified | 0000000 | 0000000 | 0000000 | 00000 |
Overload Protectors for Motor Starters
![](/prerenderstable/mvPRE/contents/gfx/imagecache/773/7730k62p1-d01c-digital@halfx_637098953515601509.png?ver=imagenotfound)
Upgrade motor starters that use thermal overload protection with these solid-state overloads—they don't use heating elements, so enclosure ventilation and cooling is not required. All have a full-load amp adjustment dial to accommodate circuits with different full-load amp ratings.
If the full-load amp rating is not shown on your motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).
For technical drawings and 3-D models, click on a part number.
Overload Current, A | Trip Time, sec. | Overload Protection Class | Motor Protection | Ht. | Wd. | Dp. | Wire Connection Type | Specifications Met | Each | |
2 Auxilliary Contacts with 1 Off (Normally Open), 1 On (Normally Closed) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Single Phase | ||||||||||
3-12 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 0000000 |
5.5-22 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
Three Phase | ||||||||||
0.75-3.4 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 3.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
3-12 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
5.5-22 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
10-40 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.2" | 3.5" | 3.2" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
13-52 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.3" | 4.5" | 4" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
25-100 | 5, 10, 20, 30 | 5, 10, 20, 30 | Overvoltage, Phase Loss | 2.3" | 4.5" | 4" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |