STM6ELY-250 Electronic Residual LCD MCCB
STM6ELY-250 electronic residual-current MCCB with LCD and remote communication, covering 40A to 1000A in 4P configurations for AC400V systems.

Order Support
- Typical production lead time: 20 working days
- Free samples — send us your express shipping account
- Technical documents checked for the requested model
- Pre-shipment inspection options can be agreed before ordering
- OEM and private-label requirements are reviewed case by case
STM6ELY-250 electronic residual-current MCCB with LCD and remote communication, covering 40A to 1000A in 4P configurations for AC400V systems.
Overview
The STM6ELY combines electronic residual-current protection, LCD monitoring and remote communication in the listed China Southern Power Grid configuration.
Key Features
- Electronic residual-current protection with LCD
- Remote communication for the listed CSG configuration
- 40A to 1000A in 4P (3P+N) construction
- Icw 10–20kA for 1s
Electronic Residual-Current MCCB with LCD STM6ELY-250
| Parameter | 250 |
|---|---|
| Number of poles | 4P (3P+N) |
| Rated current (A) | 50A~125A / 100A~250A |
| Rated voltage (V) | AC400V |
| Rated insulation voltage (V) | AC1000V |
| Rated impulse withstand voltage Uimp (kV) | 8kV |
| Short-circuit breaking capacity Icu/Ics (kA) M | 35/25 |
| Short-circuit breaking capacity Icu/Ics (kA) H | 65/50 |
| Rated short-time withstand current Icw (kA) | 10kA/1s |
| Operating cycles ON (operations) | 1000 |
| Operating cycles OFF (operations) | 7000 |
| Overall dimensions b-a-ca (mm) | 165*140*116 |
| Product features | Motor-operated device (MD), Included, external operating handle, Included, automatic trip device, electronic type |
Typical Applications
- Utility metering points
- Smart distribution
- Energy management
Frequently Asked Questions
How does STM6ELY differ from a standard metering MCCB?
It combines electronic overload and short-circuit protection with residual-current protection, an LCD and remote communication functions.
What range and pole arrangement are listed?
The family covers 40A to 1000A across 160A to 1000A frames and uses a 4P 3P-plus-neutral configuration for AC400V systems.
Request Quotation
Ask us to confirm price, MOQ, lead time and sample availability for this model.