Name: EKL37H-40 Bi-Directional RCBO
Brand: ETEK
SKU: 01999
Rating: 4.1 (1050 reviews)

Product Profile

Product Overview

The EKL37H-40 is a 3P+N 54mm RCBO for the UK market, featuring Type A & Type AC residual current protection, 40A rating, and adjustable sensitivity (10mA/30mA/100mA/300mA) with 10kA breaking capacity. Its bi-directional wiring suits,comsumer unit,distribution board, solar PV, EV chargers, and seamless replacement of existing 3P+N RCBO
Why choose us

1.Expertise & Global Certifications
ETEK Electric is a leading Chinese manufacturer specializing in MCBs, RCBOs, AFDDs, RCCBs, and SPDs. We hold ISO9001 (Quality), ISO14001 (Environment), and ISO45001 (Safety) certifications. Our products are 100% export-oriented, compliant with IEC standards and RoHS directives, and certified with CB, CE, and UKCA for global markets.
2.Over a Decade of OEM Experience in the UK
With over 10 years of OEM experience in the UK, we supply Consumer Units and components (MCBs, RCBOs, AFDDs, etc.) tailored to British standards like BS 7671 (18th Edition) and BS EN 61009-1. Our products are designed for seamless integration into UK electrical systems.
3.Rigorous Quality Control & Award-Winning Excellence

100% factory testing ensures defect-free delivery.
Awarded “Zhejiang Export Famous Brand” for premium quality.
Custom solutions (e.g., 18mm slim RCBOs, Type A protection) for UK preferences.

4.One-Stop Electrical Protection Solutions

Full product range includes:

MCBs: Type B/C/D (BS EN 60898-1).
RCBOs: Type A/AC, bi-directional (e.g., EKL17(H)-40 for solar/EV).
AFDDs: Arc fault detection (BS EN 62606).
SPDs: Surge protection (BS EN 61643-11).
Consumer unit:BS EN 61439-3

— Your Trusted Electrical Protection Partner for the UK Market

Model Preparation Meaning

EKL17(H)-40 Bi-directional RCBO Model Preparation Meaning
EK	L37H	40	BD	3N	B	06	30	A
①	②	③	④	⑤	⑥	⑦	⑧	⑨
Code	Meaning
①	ETEK ELECTRIC
②	Design No. the 37th RCBO,EKL37:6kA,EKL37H:10kA
③	Frame Current
④	BD:Bi-Directional wiring, Blank: Form bottom incoming line wiring
⑤	3N:3P+N
⑥	Curve:B:B Curve,C:C Curve
⑦	Rated Current:06:6A,10:10A,16:16A,25:25A,32:32A,40:40A
⑧	Sensitivity Current:10:10mA,30:30mA,100:100mA.300:300mA
⑨	Type: A:typeA, Blank:Type AC

Model Section Table

RCBO EKL37H-40 6kA
Poles	Curve	Type	Sensitivity	Rated current(A)	Ref No.
Poles	Curve	Type	Sensitivity	Rated current(A)	Form bottom incoming line	Bi-Directional incoming line
	B	A	30mA	6A	EKL37H-40-3NB0630A	EKL37H-40BD-3NB0630A
				10A	EKL37H-40-3NB1030A	EKL37H-40BD-3NB1030A
				16A	EKL37H-40-3NB1630A	EKL37H-40BD-3NB1630A
				20A	EKL37H-40-3NB2030A	EKL37H-40BD-3NB2030A
				25A	EKL37H-40-3NB2530A	EKL37H-40BD-3NB2530A
				32A	EKL37H-40-3NB3230A	EKL37H-40BD-3NB3230A
				40A	EKL37H-40-3NB4030A	EKL37H-40BD-3NB4030A
	C			6A	EKL37H-40-3NC0630A	EKL37H-40BD-3NC0630A
				10A	EKL37H-40-3NC1030A	EKL37H-40BD-3NC1030A
				16A	EKL37H-40-3NC1630A	EKL37H-40BD-3NC1630A
				20A	EKL37H-40-3NC2030A	EKL37H-40BD-3NC2030A
				25A	EKL37H-40-3NC2530A	EKL37H-40BD-3NC2530A
				32A	EKL37H-40-3NC3230A	EKL37H-40BD-3NC3230A
				40A	EKL37H-40-3NC4030A	EKL37H-40BD-3NC4030A

Technical Data

Standard	IEC/EN61009-1
Protection	Ground fault, Overcurrent and short circuit, Over-voltage(selectable)
Type of trip	Ground fault : Electronic
Type of trip	Overload and short circuit :Thermo-magnetic
Type of protection (electric leakage)	AC,A
No.of poles	3P+N, compact 3 modules 54mm width
Rated voltage (Ue)	400/415V~
Rated currents (In)	6,10,16,20,25,32,40A
Rated sensitivity currents (I△n)	10,30,100,300mA
Residual current off-time under (I△n)	≤ 0.1s
Rated residual making and breaking capacity (I△m)	500A(In≤50A), 10In(In>50A)
Rated frequency	50/60Hz
Rated breaking capacity	EKL37-40: 6,000A; EKL37-40H: 10,000A
Energy Limiting Class	3
Rated impulse withstand voltage(1.2/50) (Uimp)	4,000V
Dielectric test voltage at Ind. Freq.for 1 min	2kV
Thermal release characteristic	(1.13-1.45) x In
Magnetic release characteristic	B: (3-5) x In, C: (5-10) x In
Electrical life	4,000 Cycles
Mechanical life	10,000 Cycles
Contact position indicator	Yes
Protection degree	IP20
Ambient temperature	-25℃ to +40℃, Max.95% humidity
Terminal connection type	Cable/Pin-type busbar/Fork-type busbar
Max.terminal size for cable	16mm²
Max.tightening torque	2.5N.m
Installation	Mounting on 35mm DIN rail
Connection	From bottom or Bi-Directional