Why Star-Delta Starters Need the Right Accessories
Star-delta starters reduce inrush current on motor startup by 60-70%, making them the standard for motors above 5.5kW. But the starter itself is just three contactors plus a timer — what panel builders really need are the accessories that wire it all together: star-point bridges, star-delta wiring kits, and mechanical interlocks.
RF Mando added 8 new Eaton Klockner-Moeller star-delta accessory SKUs to rfmando.com in 2026. This guide shows B2B distributors which SKUs to stock for each frame size.
1. Star-Point Bridges (Frames F and G — 185A to 500A)
The star-point bridge ties the three motor winding ends together during the star phase. Without it, the star contactor has no return path. We carry frames F and G:
- XTCEXSDB500 — frame size G (500A)
- XTCEXSDB400 — frame size F (400A)
Bulk price: $320 per bridge. Lead time 7-15 days from Xiamen.
2. Star-Point Bridges (Frames B, C, D — smaller motors)
For smaller motor frames, we carry compact bridges that mount directly between contactor poles:
- XTCEXSDBC — compact frame
- XTCEXSDBB — compact frame
- XTCEXSDBG — frame size F and G
- XTCEXSDBD — frame size D
Bulk price: $320 per bridge (same as larger frames — bridge price is mostly material, not size).
3. Star-Delta Wiring Kits (Pre-wired harnesses)
Wiring kits pre-fabricate the interconnecting wiring between the three contactors, the timer, and the overload relay. Saves panel builders 1-3 hours per assembly:
Bulk price: $280 per kit. Star-delta wiring kits have the highest attach rate of any starter accessory — every starter needs one.
4. When to Source Star-Delta Accessories from RF Mando
| Channel | Lead Time | MOQ | Discount |
|---|---|---|---|
| Eaton Direct (USA) | 30-45 days | 50+ | 0% |
| EU Local Distributor | 7-15 days | 10+ | 15-20% |
| RF Mando Direct | 7-15 days | 10 | 40-45% |
5. Sample Program & Contact
Need a sample to verify fitment? We offer 1 free sample per SKU (you pay $30 DHL). For bulk quotes, contact:
- Email: Joanna@rfmando.com
- WhatsApp / Telegram: +86 189 6031 3731
- Website: https://www.rfmando.com/
All prices EXW Xiamen (China), shipping quoted separately. MOQ 10 units per SKU. Payment: T/T 30% deposit + 70% balance.