EKR3S RS485 Smart MCB | Metering & Remote Control
EKR3S RS485 is a smart MCB that provides overload and short-circuit protection for circuits up to 100A, with real-time monitoring of electrical parameters and remote control through the RS485 platform. 1P and 2P versions support electricity metering; 3P and 4P are without metering. Rated currents 10–100A, Icn 6kA, trip curves B/C/D. Automatic and manual operation modes, mechanical padlock for onsite safety. Suitable for smart homes, commercial buildings, industrial facilities and public lighting control.
● Product type: Smart MCB (Miniature Circuit Breaker)
● Series / variant: EKR3S RS485
● Communication method code: 5 = RS485
● Functions: Overload protection, short-circuit protection, over-temperature protection, multiple timing, remote control, electricity metering (1P&2P only)
● Operation modes: Automatic mode (remote control via RS485); Manual mode (local operation only)
● No. of poles: 1P, 2P (with metering); 3P, 4P (without metering)
● Rated currents (In): 10, 16, 25, 32, 40, 50, 63, 80, 100A
● Rated voltage (Ue): 230/240V (1P, 2P), 380/400V (3P, 4P)
● Rated short-circuit capacity (Icn): 6kA
● Trip curve: B, C, D
● Standard: IEC/EN 60898-1, IEC/EN 60947-2
● RS485 baud rate: 2400 / 4800 / 9600 (default)
● Installation: Mounting on 35mm DIN rail; incoming method from top
● Protection degree: IP20
Product Profile
Product Profile
EKR3S Smart MCB offers overload and short-circuit protection for circuits up to 100A, and can also monitor various electrical parameters in real-time, with remote control capabilities through the RS485 platform.
EKR3S smart MCB is an ideal choice for smart home and industrial automation systems, offering circuit protection, remote control, and monitoring capabilities to improve energy management efficiency, enhance power safety, and provide users with more control options.
This product page is for the RS485 communication variant of EKR3S (type code communication method: 5).
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Traditional Protection
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Smart Capabilities
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Advanced Functions
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Automatic / Manual Mode
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Mechanical Padlock When the mechanical lock is pulled out, the switch enters a locked state, preventing the switch from being turned on. To restore the device, press down the mechanical lock. |
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Structure labels: Power supply, Indicator Light, Mode Switch, Mechanical Lock, Distribution Button, RS485, WiFi Antenna.
485 Dry contact terminals: 485A, 485B, Dry contact G, IN1, IN2.
Application
- Smart home systems, which can be integrated into the overall home automation solution
- Commercial buildings, which can achieve centralized energy management
- Industrial facilities, which can remotely monitor and control individual circuits
- Locations where electricity consumption requires regular control, such as billboard lighting and public area lighting
Model Preparation Meaning
Model Preparation Meaning
Example type code structure: EK R3S - 5 - 2P C 63
- EK — Company code
- R3S — Series code
- 5 — Communication method (this product: 5 = RS485)
- 0: WiFi (Tuya)
- 1: Dry Contact
- 2: ZigBee (Tuya)
- 5: RS485
- 2P — No. of poles: 1P, 2P, 3P, 4P
- C — Trip type: B, C, D
- 63 — Rated currents (In): 10, 16, 25, 32, 40, 50, 63, 80, 100A
Technical Data
Technical Data
| Standard | IEC/EN 60898-1, IEC/EN 60947-2 |
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| No. of poles | 1P, 2P (with metering); 3P, 4P (without metering) |
| Supply terminal | L-N (It is advisable to draw power from the incoming line) |
| Power supply voltage | 220/230V |
| Standby power consumption | < 5W |
| Status indicator | LED |
| Rated voltage (Ue) | 230/240V (1P, 2P), 380/400V (3P, 4P) |
| Rated frequency | 50/60Hz |
| Rated currents (In) | 10, 16, 25, 32, 40, 50, 63, 80, 100A |
| Rated short-circuit capacity (Icn) | 6kA |
| Rated impulse withstand voltage (Uimp) (1.2/50μs) | 4kV |
| Dielectric test voltage | 2kV (50/60Hz, 1 min.) |
| Trip curve | B: (3-5) x In, C: (5-10) x In, D: (10-20) x In |
| Trip time | ≤ 1s |
| Electrical life | 4000 Cycles |
| Mechanical life | 10000 Cycles |
| Communication method | RS485, Baud rate: 2400 / 4800 / 9600 (default) |
| Operational safety | Mechanical padlock, ensure safety during onsite maintenance |
| Monitoring physical data | Real-time voltage, Real-time current, Real-time power, Temperature, Switch state, Device operating status |
| Function description | Overload protection, Short circuit protection, Over-temperature protection, Multiple timing, Remote control, Electricity metering |
| Characteristic set up | Over/under voltage action time, Over/under voltage value, Overcurrent value, Voltage imbalance value, Over power value, Phase loss value, Overtemperature value |
| Protection degree | IP20 |
| Ambient temperature | -5℃ to +40℃ (Current capacity is significantly reduced at 70℃) |
| Storage temperature | -25℃ to +70℃ |
| Max. supply terminal size for cable | 2.5mm2 |
| Terminal connection type | Cable/Pin-type busbar |
| Max. conductor cross-sections for cable | 50mm2 |
| Altitude | ≤2000m |
| Installation | Mounting on 35mm DIN rail |
| Incoming method | From top |
Dimensions
Dimensions
Dimension drawings cover side view and front views for 1P / 2P / 3P / 4P, including overall width values 36mm / 54mm / 72mm / 90mm, height 90mm and depth 50mm.
Wiring diagrams show power supply terminal (L / N) and pole wiring for 1P / 2P / 3P / 4P.
