STM6EY Electronic LCD MCCB
STM6EY electronic MCCB with LCD monitoring for AC400V distribution, adjustable 32A to 1250A settings, 3P/4P options and Icw up to 20kA for one second.

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- Typical production lead time: 20 working days
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STM6EY electronic MCCB with LCD monitoring for AC400V distribution, adjustable 32A to 1250A settings, 3P/4P options and Icw up to 20kA for one second.
Overview
The STM6EY electronic MCCB provides LCD monitoring for the listed AC400V frames, with adjustable electronic protection and 3P or 4P construction.
Key Features
- LCD display with real-time parameters
- 32A to 1250A with 0.4–1.0 In adjustment
- 3P / 4P construction for AC400V
- Icw 10–20kA for 1s
Metering Smart Four-Remote Circuit Breaker STM6EY
| Parameter | 250P/LCN | 400P/LCN | 630P/LCN |
|---|---|---|---|
| Rated frame current Inm (A) | 250 | 400 | 630 |
| Rated current In (A) | 125(50-125A) / 250(100-250A) | 400(160-400A) | 630(252-630A) |
| Rated operational voltage Ue (V) | AC400V | ||
| Rated insulation voltage Ui (V) | 1000 | ||
| Rated impulse withstand voltage Uimp (kV) | 8 | ||
| Number of poles | 3P | 3P | 3P |
| Rated ultimate short-circuit breaking capacity Icu (kA) AC400V | 65 | 70 | 70 |
| Rated service short-circuit breaking capacity Ics (kA) AC400V | 65 | 70 | 70 |
| Selectivity category | B | B | B |
| ICW | 5kA/1s | 8kA/1s | 10kA/1s |
| Electrical life (operations) | 1000 | 1000 | 1000 |
| Mechanical life, maintenance-free (operations) | 7000 | 4000 | 4000 |
| Mechanical life, maintained (operations) | 10000 | 7000 | 7000 |
| Fast response time | ≤ 1s | ≤ 1s | ≤ 1s |
| Overall dimensions (L mm* W mm* H mm) | 165*105*133 | 257*140*162 | 257*140*162 |
Typical Applications
- Utility metering points
- Smart distribution
- Energy management
Frequently Asked Questions
What information does the STM6EY display?
Its LCD provides real-time electrical parameters for monitoring and energy-management applications.
What electrical range does STM6EY cover?
The family spans 32A to 1250A with 0.4 to 1.0 In adjustment, 3P and 4P options, and short-time withstand ratings from 10kA to 20kA for one second.
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