SIEMENS 6SL3121-1TE21-8AA4

Marsoni

M251S

$3592.50

Get it in 3 business days with 1 day shipping. Friday, May 29

SIEMENS 6SL3121-1TE21-8AA46SL31211TE218AA4 SINGLE MOTOR MODULE SINAMICS S120 18 AMP INPUT: 600 VDC OUTPUT: 400 VAC EXTERNAL AIR COOLING SAFETY INTEGRATED FUNCTIONS REPLACEMENT FOR 6SL3121 1TE21 8AA3

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Good value for the quality of these copper cables. Cut them to the length I needed and put a copper eyelet on one end. Wire size works good between my Victron solar charge controller and the batteries. Wire gauge will be able to handle the wattage much better than what I was using. They look much more professional than the old cables I was using also!

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Reviewed in the United States on December 15, 2025

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Amazon Customer

Alexandria, US

★★★★★ 5

Be safe and always calculate the gauge wire are you need, don’t cut corners.

Size: 4 Gauge 10FT

Good quality solid copper 4 Gauge wires in red and black. Avoid aluminum wiring that has copper plating so looks like solid copper but can be dangerous if used in heavy load applications. Copper is expensive but required if amperage is high.

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Reviewed in the United States on February 8, 2026

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Jenaro Garcia

Lexington, US

★★★★★ 5

Good

Size: 1/0 Gauge 10FT

Good item

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Reviewed in the United States on April 14, 2026

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Hunter

Port Orchard, US

★★★★★ 5

Works no issues

Size: 8 Gauge 10FT

Works no issues

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Reviewed in the United States on May 7, 2026

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TJ Helser

Natrona Heights, US

★★★★★ 4

Durable insulation and pure copper not that cca bs

Size: 1/0 Gauge 5FT

Good quality. Solid copper, not that cca bs. Stiff and durable insulation. Used for big 3 car audio grounds on high output alternator. Great results. Will mention that it’s not as thick as some other brands but not by much. Terminals still crimped tightly with 1/0 gauge

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Reviewed in the United States on January 11, 2026