ranroswang@hksparkling.com 
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32 Volt Four Pole 283-3074 Toggle Switch for Caterpillar Construction Equipment 311C 330D 345C
The 283-3074 toggle switch is a 32V four-pole (four-circuit) control switch for Caterpillar excavators 311C/330D/345C (also fits 312C/312D/320C/320D/325C/330C/345D). It acts as a reliable circuit selector for functions like work mode (auto/manual), auxiliary hydraulics, or travel speed control, ensuring precise operation in heavy-duty construction.
Key Features
· OEM-Matched Precision: Exact 4-pole contact layout, M12×1 panel thread, and terminal pitch—plug-and-play for Cat cabs.
· Durable Construction: Reinforced PA66 housing (IP65 dust/waterproof); silver-plated copper contacts for low resistance (<50mΩ) and anti-oxidation.
· Stable Electrical Performance: 32V DC rated, 10A per pole; -40°C to 85°C operating temp for extreme worksites.
· Long Mechanical Life: 10,000+ toggle cycles; tactile detent for clear mode feedback, reducing misoperation.
Compatible Equipment
The 283-3074 toggle switch assembly is used across a wide range of Caterpillar machinery and engines:
· Excavators: Models like the 311C, 312C/D, 320C/D, 323D, 325C/D, 330D, and 345C are compatible.
· Engines: It is compatible with various Cat engines, including the 3046, 3054, 3066, C7, and C9 series.
· Other Machinery: It also fits certain wheeled excavators and forest machines.
Thank you for choosing SPARKLING MACHINERY for your toggle switch needs. The 283-3074 32V four-pole switch is critical for consistent control of Cat excavator functions, ensuring reliable operation in dusty, wet, or high-vibration environments. Our switches meet ISO 9001 and Cat OEM standards, backed by a 12-month warranty and technical support for installation/troubleshooting.
The SPARKLING MACHINERY NEW 283-3074 Toggle Switch Photo:
Why Choose the SPARKLING 283-3074 Toggle Switch?
- OEM-Grade Fit: Matches original contact configuration, mounting thread, and wire terminal layout—restores 99%+ control accuracy.
- Superior Durability: IP65-rated housing and silver-plated contacts reduce failure risk by 75% vs. generic switches.
- Reduced Downtime: Plug-and-play design cuts replacement time; 100% tested for continuity, insulation, and cycle life.
- Cost-Effective: 40% lower price than OEM with same quality; 12-month warranty covers manufacturing defects.
- Certified Quality: CE/RoHS compliant; each unit passes high-voltage (1500V AC) and vibration resistance testing.
| PART NUMBER | PART NAME | |
| 1 | 310-9356 | CONTROL GP-TRANSMISSION |
| 2 | 246-2671 | SWITCH AS-MULTIFUNCTION |
| 3 | AT159811 | SWITCH |
| 4 | AT393721 | SWITCH |
| 5 | RE500539 | FAN DRIVE |
| 6 | ZTAM-00509 | JOINT ASSY-UNIVERSAL |
| 7 | 21M9-50900 | LAMP ASSY-COMBI LH |
| 8 | 3E-9362 | RELAY |
| 9 | 146-9439 | RELAY |
| 10 | 261-2207 | GP-Transmission Controll |
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.
Get In Touch:
- Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879