Eaton 134935 DS7-342SX055N0-N DS7 Soft Starter 30 kW 55 A 230V

The Eaton DS7-342SX055N0-N is a Generation 7 three-phase soft starter rated at 55 A with a mains voltage range of 200 - 480 V AC and control voltage of 110/230 V AC. It delivers smooth acceleration and deceleration for three-phase asynchronous motors, with an integrated internal bypass that reduces steady-state heat dissipation. Rated for 30 kW at 400 V and 15 kW at 230 V inline, it suits a wide range of industrial motor-starting applications.

Technical specifications:

• Model code: DS7-342SX055N0-N
• Catalog number: 134935
• Manufacturer: Eaton
• EAN: 4015081317509
• Rated current: 55 A
• Mains voltage: 200 - 480 V AC
• Control voltage: 110/230 V AC
• Rated motor power at 400 V, inline: 30 kW
• Rated motor power at 230 V, inline: 15 kW
• Assigned motor power at 460/480 V, 60 Hz: 40 HP
• Assigned motor power at 200/208 V, 60 Hz: 15 HP
• Phase: Three-phase
• Frame size: FS3
• Series: Generation 7
• Relay outputs: 2 (TOR, Ready), 250 V AC
• Degree of protection: IP20 / NEMA 1
• Pollution degree: 2
• Overvoltage category: II
• Ambient operating temperature: -5 °C to 40 °C
• Ambient storage temperature: -25 °C to 60 °C
• Altitude: Max. 2000 m (1% derating per 100 m above 1000 m)
• Mounting position: Vertical
• Dimensions (W x H x D): 93 x 175 x 139 mm
• Weight: 1.8 kg

Features and benefits:

• Internal bypass with integrated bypass contacts lowers heat dissipation during full-speed operation
• Suppression of closing transients and DC components protects motor windings from electrical stress
• Minimum ramp time of 1 s enables fast switching as a semiconductor contactor
• Two relay outputs (TOR, Ready) at 250 V AC allow straightforward integration with external control circuits
• Wide mains voltage range (200 - 480 V AC) and dual control voltage (110/230 V AC) suit global installations
• Finger and back-of-hand proof design (IP20 / NEMA 1) for safe panel integration

Applications:

• Soft starting of pumps, fans, compressors, and conveyors in industrial plants
• Control panel and switchgear cabinet integration requiring frame size FS3 soft starters
• Three-phase asynchronous motor control where reduced mechanical start-up stress is critical
• Industrial sites at altitudes up to 2000 m with appropriate derating
• OEM machine builders needing dual control voltage flexibility

Compliant with IEC/EN 60947-4-2, UL 508, CSA, CE, and GB 14048.6. Part of Eaton's DS7 Generation 7 soft starter series.

Also known as: Eaton DS7-342SX055N0-N, Eaton 134935, Eaton catalog 134935, Eaton model DS7-342SX055N0-N, DS7 55A soft starter FS3, Eaton DS7 three-phase soft starter 55A.