YCB9NL-40LS RCBO

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YCB9NL-40LS RCBO

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YCB9NL-40LS RCBO

A modular DIN rail-mounted safety device designed for residential electrical systems, combining overload, short-circuit, and earth fault protection. Compliant with IEC/EN 61009-1 standards, it features a compact design, flame-retardant housing, and user-friendly functions like monthly test requirements, contact position indicators (red=ON, green=OFF), and a non-slip handle for reliable operation.

Product Details

Type designation

Operating conditions

1. Ambient temperature: -25°C ~+40°C.

2. Air conditions:At mounting site,relative humidity not exceed 50% at the maximum temperature of +40°C. For the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature averaged in that month is +20°C , special measures should betaken to occurrence of condensation.

3. Altitude: ≤ 2000m.

4. The installation category is II and III.

5. The circuit breaker shall be installed on DIN rail EN 60715(35mm), which shall meet the A1.1 TH 35-7.5 steel mounting rail requirements.

6. Pollution grade: 2

7. Mounting conditions: inclination between mounting plane and vertical plane not exceed±5°C

8. The external magnetic field of the installation site should not exceed 5 times of the geomagnetic field in any direction.

9. The product should locate in the places where there are no obvious impact and shake.

Structural features and working principle

YCB9NL-40LS Range RCBO with switched neutral built in as standard will fully isolate a faulty or damaged circuit by disconnecting live and neutral conductors . They offer the most comprehensive circuit protection available .

Using the WRB range RCBO will guarantee that healthy circuits remain in service and that only a faulty circuit is switched off. This avoids danger and prevents inconvenience in the event of a fault. They have switched neutral built in as standard , live and neutral conductors do not have to be disconnected for insulation resistance testing. This saves time and money

Technical data

Type	Standard	IEC/EN 61009-1
Electrical features	Rated current In(A)	2,4,6,10,16,20,25,32,40
	Type	Electronic
	Type(wave form of the earth leakage sensed)	A Type
	Poles	1P+N(Switched Live and Neutral)
	Rated voltage Ue(V)	230
	Rated sensitivity I△n	30mA
	Insulation voltage Ui(V)	500
	Rated frequency	50/60Hz
	Rated breaking capacity	6kA
	Rated residual making and breaking capacity I△m(A)	3000
	Rated impulse withstand voltage(1.2/50)Uimp(V)	4000
	Break time under l△n(s)	≤0.1
	Dielectric test voltage at ind.Freq.for 1 min(kV)	2
	Pollution degree	2
Mechanical features	Thermo-magnetic release characteristic	B,C
	Electrical life	2,000
	Mechanical life	10,000
	Contact position indicator	Yes
	Protection degree	IP20
	Reference temperature for setting of thermal element(℃)	30
Installation	Ambient temperature (with daily average ≤35℃)	-5～+40
	Storage temperation(℃)	-25～+70
	Terminal connection type	Cable/U-type busbar/Pin-type busbar
	Terminal size top for cable	10mm²
	Terminal size bottom for cable	16mm²/18-8AWG
	Terminal size top/bottom for Busbar	10mm²/18-8 AWG
	Tightening torque	2.5 N*m /22 In-Ibs.
	Mounting	On DIN rail EN 60715(35mm)
	Connection	From bottom

Overall and mounting dimensions(mm)

Temperature compensation coefficient table

The maximum permissible current in a circuit breaker depends on the ambient temperature at which the circuit breaker is placed. Ambient temperature is the temperature inside the enclosure or switchboard in which the circuit breakers are installed. The reference temperature is 30°C Ambient temperature: -5°C ~+40°C.

Temperature	-10℃	0℃	10℃	20℃	30℃	40℃	50℃	60℃
Temperature compensation coefficient of rated current	1.20	1.15	1.10	1.05	1.00	0.95	0.90	0.85

Ordering instructions

• When ordering, the customer shall indicate: the product name of RCBO, model, rated current, rated residual operating current, instantaneous tripping type, number of poles, quantity. For example: YCB9NL-40LS TYPE A 1P+N C40 100 units.