RCBO Type A Or AC 415V 40A Leakage & Overcurrent Isolation

Name: RCBO Type A Or AC 415V 40A ETL3-40M - ETEK Electri
SKU: ETL3-40M

Engineered for highly demanding three-phase power systems, this RCBO Type A or AC masterfully combines overcurrent, short circuit, and earth leakage protection within a single robust unit. The ETL3-40M series functions as a highly dependable residual current circuit breaker with overcurrent protection, specifically optimized to monitor AC and pulsating DC residual currents across critical residential and industrial distribution networks up to 40A.

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ModelETL3-40M

CategoryRCBO Breakers, Circuit Breakers

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of the RCBO Type A Or AC

Constructed for rigorous electrical environments, this RCBO Type A or AC utilizes a highly responsive electronic ground fault trip mechanism paired with a heavy-duty thermo-magnetic core.

Dual Leakage Detection: Effectively detects standard sinusoidal AC residual currents (Type AC) alongside pulsating DC leakage currents below 6mA (Type A).
High Short-Circuit Defense: Achieves a formidable 6kA rated short-circuit capacity (Icn) or an upgraded 10kA (ETL3-40MH), effortlessly clearing high-inrush three-phase fault currents.
Advanced Visual Diagnostics: Integrates a distinct residual current trip indicator alongside a red/green contact position window for instant, error-free fault recognition.
Flexible Wiring Architecture: Fully supports bidirectional power routing and accepts cables up to 25mm² (rigid) alongside standard pin and fork-type busbars.
Eco-Conscious Durability: Built from premium halogen-free, RoHS-compliant thermoplastics, ensuring long-term structural integrity and an 8,000-cycle mechanical lifespan.

ETL3-40M Configuration & Design Tips

The ergonomic IP20 DIN-rail mountable shell incorporates clear visual diagnostics to streamline heavy-duty B2B installations and safety verification.

ETL3-40M Product Tips

PIN / Fork Busbar Ready: Specially designed terminal cavities to accept robust busbar connections for parallel panel routing.
Live Line Interface: Distinctly separated phase connections engineered for maximum three-phase AC electrical isolation.
EAN-13 Barcodes: Pad-printed directly on the side enclosure for rapid B2B inventory scanning and warehousing tracking.
Handle Lock Position: Molded slot designed to securely lock the toggle with a mechanical padlock during vital line maintenance.
Short-Circuit Capacity: Distinct 6kA or 10kA metric marking explicitly pad-printed on the faceplate for exact engineering verification.
Neutral Line Interface: Clearly marked N-pole positioned precisely for standard industrial 3P+N panel integration.
Test Button: Integrated monthly test switch to instantly verify the internal electronic tripping integrity.
Residual Current Trip Indicator: Specialized visual window to instantly identify if a trip was caused by an earth leakage fault.
Sensitivity to Residual Current AC, A: Faceplate markings indicating precise Type A and Type AC detection parameters.
Contacts Position Window: Clear red/green mechanical contact position indicator for instant operational status recognition.

Commercial Applications for the RCBO Type A Or AC

Deploying the ETL3-40M secures vital three-phase distribution nodes, acting as a highly dependable residual current circuit breaker with overcurrent protection for demanding commercial infrastructure.

Applications & Use Cases

Industrial Equipment Protection: Secures robust three-phase AC power supply lines feeding specialized industrial machinery against simultaneous overloads and earth faults.
Commercial Lighting Networks: Controls and comprehensively isolates extensive lighting circuits within large-scale office buildings and retail complexes.
Residential Distribution Systems: Functions as the primary protective unit in main consumer distribution boards, safeguarding domestic systems from severe electrical damage.

Technical Specifications for the RCBO Type A Or AC

Evaluate the exact electronic and thermo-magnetic parameters below to seamlessly integrate this RCBO Type A or AC into your specialized three-phase distribution panels.

General, Electrical & Mechanical Data

General & Technical Data (IEC/EN 61009-1)
Electrical & Protection Parameters
Protection	Ground fault, Overcurrent and short circuit	Type of trip	Ground fault: Electronic \| Overload: Thermo-magnetic
No. of poles	3P+N	Rated frequency	50/60Hz
Rated voltage (Ue)	400/415V~ AC	Energy limiting class	3
Rated currents (In)	6, 10, 16, 20, 25, 32, 40A
Rated sensitivity currents (IΔn)	30, 100, 300mA	Residual current off-time	< 0.3s
Rated short-circuit capacity (Icn)	6kA (ETL3-40M) \| 10kA (ETL3-40MH)	Rated residual capacity (IΔm)	500A
Insulation voltage (Ui)	500V	Rated impulse withstand (Uimp)	4kV (1.2/50μs)
Mechanical & Installation Data
Electrical / Mechanical life	4,000 Cycles / 8,000 Cycles	Protection degree	IP20
Terminal connection type	Cable / Pin-type / Fork-type busbar	Max. tightening torque	2.5 N.m
Operating ambient temp.	-25°C ~ +55°C	Fire resistance (glow-wire)	960±15°C (Enclosure)

RCD Type Classifications

The ETL3-40M provides precise detection tailored for standard and pulsating fault currents.

RCD Type rcbo type a or ac ETL3-40M

Tripping Sensitivity Applications

Select the precise sensitivity rating (IΔn) to match specific personnel and equipment protection requirements.

Sensitivity Ratings (IΔn)
30mA	Most commonly used for personnel protection in homes and commercial buildings, suitable for general socket protection.
100mA	Usually used in situations where personal protection is less strict, focusing heavily on equipment protection like air conditioning systems.
300mA	Mainly used for superior fire protection, acting as general protection for massive distribution boards.

Breaking Time of Residual Current

Understand the exact break times for varying fault multipliers.

In (A)	IΔn (mA)	Max. Breaking Time at:
In (A)	IΔn (mA)	IΔn	2IΔn	5IΔn	5, 10, 20, 50, 100, 200, 500A
6, 10, 16, 20, 25, 32, 40	30, 100, 300	0.3s	0.15s	0.04s	0.04s

Thermo-Magnetic Tripping Characteristics

The thermal and magnetic release parameters adapt perfectly to diverse load environments.

rcbo type a or ac ETL3-40M B and C Curve Tripping Characteristic

Curve Type	Rated Current	Thermal Release (Condition)			Magnetic Release (Condition)
Curve Type	Rated Current	Non-trip (1.13In)	Trip (1.45In)	Trip Time	Hold Current	Trip Current	Trip Time
B	6-40A	≤ 1h	–	< 1h	3In	5In	≥0.1s / <0.1s
C	6-40A	≤ 1h	–	< 1h	5In	10In	≥0.1s / <0.1s

Temperature Derating Table

Use the correction factors below to accurately adjust the continuous rated current based on ambient installation temperatures.

Rated Current (A)	Correction Factor for Ambient Temperature
Rated Current (A)	-40°C	-30°C	-20°C	-10°C	0°C	10°C	20°C	30°C	40°C	50°C	60°C	70°C
6	8.0	7.7	7.5	7.2	6.9	6.6	6.3	6	5.7	5.3	4.9	4.5
10	13.3	12.9	12.5	12.0	11.5	11.1	10.5	10	9.4	8.8	8.2	7.5
16	21.3	20.7	20.0	19.2	18.5	17.7	16.9	16	15.1	14.1	13.1	11.9
20	26.7	25.8	24.9	24.0	23.1	22.1	21.1	20	18.9	17.6	16.3	14.9
25	33.3	32.3	31.2	30.0	28.9	27.6	26.4	25	23.6	22.0	20.4	18.6
32	42.7	41.3	39.9	38.5	37.0	35.4	33.7	32	30.2	28.2	26.1	23.9
40	53.3	51.6	49.9	48.1	46.2	44.2	42.2	40	37.7	35.3	32.7	29.8

Dimensions and Wiring of the RCBO Type A Or AC

Verify the exact modular DIN rail footprints and wiring capacities below to guarantee perfect panel fitment for this RCBO Type A or AC.

Circuit Diagram (3P+N)

rcbo type a or ac ETL3-40M Circuit Diagram

Physical & Mounting Specifications

rcbo type a or ac ETL3-40M Dimensions

Poles Configuration	Width (mm)	Height (mm)	Total Depth (mm)
3P+N	72 mm	84 mm	71 mm