About Safety Ratings for Electrical Testing
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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 |
Motor Phase Sequence Testers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/726/7264k1p1-d01e-digital@halfx_636918915697461420.png?ver=imagenotfound)
Incorrect motor rotation can be caused by a miswired connection from your motor to a three-phase electrical system. Use this tester to check the phase rotation (clockwise or counter-clockwise) of the motor and the electrical system to confirm proper wiring.
Test Leads | |||||||||||
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Measures | AC Voltage | Frequency, Hz | Display Type | Safety Rating | Includes | No. of | Lg. | Batteries Required | Batteries Included | Each | |
Open Phases, Three-Phase Rotation | 40-600 | 2-400 | Light Indicator | CAT III, 600V | Alligator Clips, Carrying Case, Test Leads | 3 | 50" | Yes | Yes | 000000 | 0000000 |