Siemens 3RT20471AK60 Contactor AC-3 55 kW (Size S3 / Replacement 3RT2047-1AK60)

Product Description

Siemens 3RT20471AK60 is a SIRIUS S3 power contactor rated AC-3 for 55 kW at 400 V, designed for motor switching and industrial control applications. It is a 3-pole device with 3 main contacts and 1 NO + 1 NC auxiliary configuration, and it accepts a 110 V AC (50 Hz) or 120 V AC (60 Hz) coil. The unit uses screw terminals and supports DIN-rail mounting for modular integration.

• AC-3 rating: 55 kW at 400 V, 3-pole power contactor with 3 main contacts and 1 NO/1 NC auxiliary
• Coil/control voltage: 110 V AC (50 Hz) / 120 V AC (60 Hz); coil power rating 22/326 VA (inrush/holding)
• Screw terminal connections, DIN-rail mounting (Size S3), dimensions 140 x 70 x 152 mm

Product Highlights

Power contactor for motor switching (AC-3), 55 kW @ 400 V, 3 poles, 110/120 VAC coil, screw terminals, DIN-rail mount

Product Information

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT20471AK60
• Country of Origin: Germany

Technical Specifications

• Manufacturer Part Number: 3RT20471AK60
• Brand: Siemens
• Series: SIRIUS 3RT2
• Product Type: Power contactor
• Application: Motor switching (AC-3)
• Rated power (AC-3, 400 V): 55 kW
• Rated operating current (Ie, AC-3, 400 V): 98 A
• Poles: 3
• Contact configuration: 3 main NO contacts; auxiliary 1 NO + 1 NC
• Number of auxiliary contacts: 2 (1 NO, 1 NC)
• Coil voltage: 110 V AC (50 Hz) / 120 V AC (60 Hz)
• Coil power rating: 22/326 VA (inrush/holding, likely inrush = 326 VA, holding = 22 VA)
• Frequency: 50/60 Hz
• Terminal type: Screw connection
• Mounting type: DIN rail
• Size: S3
• Dimensions (H x W x D): 140 x 70 x 152 mm (5.51 x 2.76 x 5.98 inches)
• Enclosure rating: IP00 / IP20 (ambiguous; possibly depends on accessory/installation)
• Operating temperature: -25 to 60 �C
• Standards / Approvals: IEC, UL/CSA, CCC, CE, CSA, EAC, RCM, RoHS
• Frame / Series / Class / Code: S3
• Power loss per pole (current-dependent): 7.9 W
• Power loss, static (current-independent): 22 W
• Horsepower ratings: Manufacturer table provided (see note) � listed values appear to be a broad conversion table; verify against Siemens datasheet for specific supply/phase
• Operating cycles (rated): 10,000,000
• Weight: 3.819 lb
• Country of origin: Germany
• Alternate part numbers: 3RT2047-1AK60, 3RT2 047-1AK60
• RoHS compliant: Yes