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Description
3LD2704-0TK51Sentron, Switch Disconnector 3LD, Main Switch, 3 pole, IU: 100 A, Operating Power At AC 23 A At 400 V: 37 KW Sentron, Switch Disconnector 3LD Specifications Product designation: Switch disconnector, main switch, 3 pole Brand series: Siemens SENTRON 3LD series Rated current (Iu): 100 A Poles: 3 Rated insulation voltage: 690 V Operating power (AC 23 A) at 400 V: 37 kW Operating power (AC 23 A) at 690 V: 30 kW Mechanical service life (typical): 100,000
Sentron, Switch Disconnector 3LD, Main Switch, 3-pole, IU: 100 A, Operating Power / At AC-23 A At 400 V: 37 KW
Sentron, Switch Disconnector 3LD
Specifications
- Product designation: Switch disconnector, main switch, 3-pole
- Brand / series: Siemens SENTRON “3LD” series
- Rated current (Iu): 100 A
- Poles: 3
- Rated insulation voltage: 690 V
- Operating power (AC-23 A) at 400 V: 37 kW
- Operating power (AC-23 A) at 690 V: 30 kW
- Mechanical service life (typical): 100,000 operating cycles
- Electrical endurance at AC-23 A / 690 V: 6,000 operating cycles
- Surge voltage resistance: 6 kV
- Protection class / Degree of protection: IP65 on front
- Power loss per pole (at rated current): Approximately 7.5 W
- Mounting type: Front-mounted, 4-hole mounting of handle
- Connection conductor cross-section (main circuit): Solid: 4 – 50 mm² • Stranded: 4 – 35 mm²
- Ambient temperature (operation): –25 °C to +55 °C
- Weight (approx.): 0.49 kg
- Function: Main and emergency-off switch for motor or power isolation applications
Downloads
Additional Information
| Device | Disconnector |
| Type | Sentron | Switch | Disconnector | 3LD |
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4.3 ★★★★★
Based on 953 reviews
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Product Reviews
★★★★★ 5
Good
Size: 1/0 Gauge 10FT
Good item
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Works no issues
Size: 8 Gauge 10FT
Works no issues
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 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
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 5
Quality wire and true specs
Size: 8 Gauge 10FT
Good quality car audio power wire.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 5
Great Cable
Size: 4 Gauge 50FT
Labeled correctly and very flexible. Insulation is nice and thick and not easily marred.
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Reviewed in the United States on December 5, 2025