S811T30N3S

The S811T30N3S is a motor soft-starter that is manufactured by Cutler Hammer, a division of Eaton Corporation. This is a solid-state controller that can be used in a wide variety of applications such as starting and stopping motors that is one of the most common prime movers of machines or equipment in the industry. The S811T30N3S is designed to operate when supplied with 200 - 600 VAC voltages while the control circuitry of this soft-starter is rated at 24 VDC. The nominal output or load voltages of this soft-starter are 208/240/380/480/575 Volts AC with output current rating of 304 Amperes and ratings that varies depending on the load voltage particularly, 100 Horsepower at 200/208V 3PH; 100 Horsepower at 230/240V 3PH; 250 Horsepower at 460/480V 3PH and 300 Horsepower at 575/600V 3PH. The S811T30N3S comes with an integral bypass with a mechanical lifespan of 10 Million actuation, an insulating voltage of 660 V. In addition, this soft-starter is provided with a Class A and Class C relay contact output rated 240 VAC / 120 VDC and a current of 3 Amperes. This soft-starter is capable of implementing Current limit start, Kick-start, ramp-start, and ramp-stop. Adjustable ramp parameter time ranges from 0.5-180 seconds and 0.5-360 seconds for extended ramp function. The S811T30N3S has an open-type enclosure. It carries certifications from IEC 60947-4-2, EN 60947-4-2, UL, CE, CSA. Embedded motor protection includes an overload trip class of 5,10,20 and 30 with a configurable overload setting of 30-100%. This soft-starter can be operated at a shock rating not exceeding 15 g and vibration not exceeding 3g.

The Eaton Cutler-Hammer S811T30N3S motor starter is a reduced voltage solid-state motor starter. It can apply a 3-phase soft start in applications such as pump, rock crusher, wood-chipper, conveyor, compressor, and bread mixer applications. The S811T30N3S motor starter has a 200-millimeter frame size, and it belongs to the Eaton Intelligent Technology series of motor starters called the S811 series. The unit can be upgraded with MOVs (Metal Oxide Varistors or surge suppressors) that can be mounted on the line side or on the load side of the motor starter. The device can be positioned either horizontally or vertically, but there should be enough clearance (about 4 inches) around the soft starter for good air circulation. The Eaton S811T30N3S motor starter has a current rating of 304 Amps and it requires a 200 to 600 Volts AC 3-phase power supply. It can digitally send information over relay outputs. Relay 1 is a Form A normally-open contact that closes when the bypass contactor is powered. This signal remains closed until the soft-stop is initiated. Relay 2 is a Form C normally-open contact that is programmed to close when there is a fault condition. The S811T30N3S motor starter can be programmed to act in a certain way in the case of a trip situation. It can be adjusted to automatically reset the trip as soon as the trip condition is no longer present. The other option is to configure the device to work in the manual reset mode. In this case, the operator must press the RESET button on the control panel of the unit to clear an alarm. The digital inputs on the unit are 24 Volts DC rated.