Claire
Mr.Fu
Claire
High Sensitivity SJKM3L ELCB Earth Leakage Circuit Breaker - Reliable China Suppliers & Factory for 230V/415V AC Systems
Type Designation
| 1 | Technical Parameters |
| 2 | Mounting Holes |
| 3 | Product Model |
| 4 | Breaking Capacity |
| 5 | Compliance Standards |
| 6 | Manufacturer Name |
| 7 | Trip Button |
| 8 | Certification Mark |
| 9 | Circuit Breaker with Isolation Function |
| 10 | Manufacturer Logo |
| 11 | Rated Current |
| 12 | Rated Residual Operating Current |
| 13 | Ultimate Non-operating Time |
| 14 | Earth Leakage Indicator Button |
| 15 | Earth Leakage Test Button |
| 16 | Close, Trip, Open |
Product Display
Technical Parameters
| SJKM3L-125 | SJKM3L-160 | ||||||
| Rated Voltage Ue (V) | 230(2P)/400/415 | 230(2P)/400/415 | |||||
| Rated Current In (A) | 16/20/25/32/40/50/63/80/100/125 | 100/125/140/160 | |||||
| Rated Insulation Voltage Ui (V) | 800 | 800 | |||||
| Rated Impulse Withstand Voltage Uimp (kV) | 8 | 8 | |||||
| Number of Poles | 2/3/4(A,B) | 2/3/4(A,B) | |||||
| Rated Residual Operating Current I△n mA (3-step adjustable) | Non-delayed Type | 30mA,100mA,300mA | 30mA,100mA,300mA | ||||
| 100mA,300mA,500mA | 100mA,300mA,500mA | ||||||
| Time-delayed Type | 100mA,300mA,500mA | 100mA,300mA,500mA | |||||
| Rated Residual Non-operating Current I△no mA | 50%I△n | 50%△n | |||||
| Non-delayed Type: Tripping Time s | ≤0.1 | ≤0.1 | |||||
| Fixed Delay: 2I△n Ultimate Non-operating Time s (Special Order) | 0.1/0.2/0.3/0.4/0.5/1 | 0.1/0.2/0.3/0.4/0.5/1 | |||||
| Adjustable Delay: Ultimate Non-operating Time at 2I△n s (Standard) | Y1:0.1/0.2/0.3s | Y1:0.1/0.2/0.3s | |||||
| Y2:0.4/0.5/1s | Y2:0.4/0.5/1s | ||||||
| Breaking Capacity | C (3/4P) | S | F (3/4P) | C (3/4P) | S | F (3/4P) | |
| lcu(415V) | 20 | 35 | 50 | 20 | 35 | 50 | |
| Ics(415V) | 12 | 21 | 30 | 12 | 21 | 30 | |
| Rated Residual Short-circuit Making Capacity I△m(kA) | 25%Icu | 25%Icu | 25%Icu | 25%Icu | |||
| Mechanical Endurance | With Maintenance | 20000 | 40000 | 20000 | 40000 | ||
| Maintenance-free | 10000 | 20000 | 10000 | 20000 | |||
| Electrical Endurance at 400V | 4000 | 8000 | 4000 | 8000 | |||
| Modular Accessory Installation | ■ | ■ | |||||
| Isolation Function | ■ | ■ | |||||
| Protection Type | Distribution Protection | Distribution Protection | |||||
| Motor Protection (Not available for 2P) | Motor Protection (Not available for 2P) | ||||||
| Tripping Method | Thermal-magnetic Trip | ■ | ■ | ||||
| Magnetic-only Trip | ■ | ■ | |||||
| Connection Method | |||||||
| Fixed Front Terminal Connection | ■ | ■ | |||||
| Fixed Rear Terminal Connection (No 2P) | ■ | ■ | |||||
| Plug-in Rear Terminal Connection (No 2P) | ■ | ■ | |||||
| Dimension (mm) | 2P | 62*150*72 | 75*165*74 | ||||
| 3P | 92*150*93.5 | 107*165*94 | |||||
| 4P | 122*150*93.5 | 142*165*94 | |||||
SJKM3L Series Overcurrent Characteristic Curve Diagram
Left Diagram: SJKM1LE-125 Time-Current Characteristic Curve(Motor)
Right Diagram: SJKM1LE-250 Time-Current Characteristic Curve(Motor)
Left Diagram: SJKM1LE-400 Time-Current Characteristic Curve(Motor)
Right Diagram: SJKM1LE-630,800 Time-Current Characteristic Curve(Motor)
Operating Principle Diagram
SJKM3L Series Plug-in Front/Rear Panel Hole Position Diagram
| Frame | Number of Poles | A | A1 | B | B1 | C | D | |
| Plug-in Front Connection | 125 | 3 | / | 30 | / | 110 | / | 5 |
| 4 | ||||||||
| 160/250 | 3 | / | 35 | / | 150 | / | 5 | |
| 4 | ||||||||
| Plug-in Rear Connection | 125 | 3 | 94 | 60 | 40 | 67 | 90 | 5.5 |
| 4 | 124 | 90 | ||||||
| 160/250 | 3 | 110 | 70 | 45 | 74 | 100 | 6.5 | |
| 4 | 145 | 105 | ||||||
| 400 | 3 | 157 | 88 | 60 | 145 | 170 | 8.5 | |
| 4 | 205 | 132 | ||||||
| 630 | 3 | 212 | 140 | 62 | 143 | 185 | 11 | |
| 4 | 282 | 210 | ||||||
Frequently Asked Questions (FAQ)
Q1: What is the SJKM3L series Earth Leakage Circuit Breaker used for?
The SJKM3L series Earth Leakage Circuit Breaker (ELCB) is designed to provide simultaneous overcurrent protection and earth leakage protection for electrical systems. It is suitable for distribution panels and motor circuits, protecting against short circuits, overloads, and ground faults.
Q2: What rated current options are available for the SJKM3L-125 model?
The SJKM3L-125 model is available in rated current (In) options of 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, and 125A, covering a wide range of application needs.
Q3: What are the available residual operating current (I△n) settings on the SJKM3L series?
The SJKM3L series offers 3-step adjustable residual operating current settings. For the non-delayed type, options include 30mA/100mA/300mA or 100mA/300mA/500mA. For the time-delayed type, the available settings are 100mA/300mA/500mA.
Q4: Does the SJKM3L series support modular accessories and isolation function?
Yes, both the SJKM3L-125 and SJKM3L-160 models support modular accessory installation and are equipped with an isolation function, making them suitable for safe maintenance and disconnection operations.
Q5: What connection methods are supported by the SJKM3L series?
The SJKM3L series supports three connection methods: Fixed Front Terminal Connection, Fixed Rear Terminal Connection (not available for 2P), and Plug-in Rear Terminal Connection (not available for 2P), providing flexible installation options for different panel configurations.
Q6: What is the breaking capacity of the SJKM3L series at 415V?
At 415V, the SJKM3L series offers three breaking capacity levels: Standard (C) with Icu of 20kA and Ics of 12kA; High (S) with Icu of 35kA and Ics of 21kA; and Extra High (F) with Icu of 50kA and Ics of 30kA. This applies to both the SJKM3L-125 and SJKM3L-160 frames.