Claire
Mr.Fu
Claire
SJKM3L ELCB Earth Leakage Circuit Breaker - High Sensitivity 230V/415V from China Suppliers and Factory
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) | |
| Icu (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)
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)
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
Q
What is the rated voltage range of the SJKM3L series earth leakage circuit breaker?
The SJKM3L series supports a rated voltage (Ue) of 230V for 2-pole configurations and 400V/415V for multi-pole configurations, making it suitable for both single-phase and three-phase power distribution systems.
Q
What rated residual operating current options are available for the SJKM3L series?
The SJKM3L series offers 3-step adjustable residual operating current settings. For the non-delayed type, options include 30mA, 100mA, and 300mA, or 100mA, 300mA, and 500mA. The time-delayed type provides 100mA, 300mA, and 500mA settings, accommodating a wide range of earth leakage protection requirements.
Q
What breaking capacity levels does the SJKM3L series offer?
The SJKM3L series provides three breaking capacity grades at 415V: 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. Both SJKM3L-125 and SJKM3L-160 frames share the same breaking capacity values.
Q
Does the SJKM3L circuit breaker support an isolation function?
Yes, the SJKM3L series is equipped with a built-in isolation function, as indicated on the product label and confirmed in the technical parameters table. This allows the breaker to serve as both a protective device and an isolating switch, simplifying installation and improving safety during maintenance.
Q
What connection methods are available for the SJKM3L series?
The SJKM3L series supports three connection methods: Fixed Front Terminal Connection (available for all pole configurations), Fixed Rear Terminal Connection (not available for 2P), and Plug-in Rear Terminal Connection (not available for 2P). This flexibility makes it compatible with various switchgear and panel board installations.
Q
What are the available pole configurations and dimensions for the SJKM3L-125 and SJKM3L-160?
Both the SJKM3L-125 and SJKM3L-160 are available in 2-pole, 3-pole, and 4-pole configurations (A and B types). For the SJKM3L-125, dimensions are: 2P — 62×150×72mm, 3P — 92×150×93.5mm, 4P — 122×150×93.5mm. For the SJKM3L-160, dimensions are: 2P — 75×165×74mm, 3P — 107×165×94mm, 4P — 142×165×94mm.