Smart MCCB Circuit Breaker with RS485 Auto Re-Closing Residual Current Metering Protection

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: SRM1E
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: MCCB
• Poles Number: 4
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Overcurrent Protection, OVP(Overvoltage Protection), RCCB, Undervoltage Protection
• Certification: ISO9001-2000, CE, CB, CCC
• Model: Srm1e
• Number of Poles: 4p
• Current Value: 250A
• Rated Current in: 80, 100, 125,150, 250A
• Transport Package: 4 PCS/Carton
• Specification: IEC60947-2
• Trademark: LONGROAD/OEM
• Origin: China
• Production Capacity: 30, 000 Units/Month
• Package Size: 20.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 5.000kg

Product Description

1.Application

The rated insulation voltage of series residual current operated circuit breaker is 1000V,which is suitable for three-phase four-wire

neutral point direct grounding (TT)distribution networks with 50Hz AC,400V rated

voltage and 630A rated current.It is used to provide indirect contact protection;Prevent fire danger caused by grounding fault current

due to equipment insulation damage;And it can be used to distribute electric

energy and it can also be used to distribute electric energy and protect lines and power supply equipment from overload ,short

circuit,overvoltage,undervoltage single-phase grounding fault and other faults.

Products meet the following standards:Low-voltage Switchgear and Control Gear-Part 2:Circuit Breaker (IEC60947-2);

2.Main Functions and Features

1.High-performance 32-bit ARM microprocessor is used to carry out signal processing and intelligent control in real

time;

2.LCD Chinese/English display provides friendly HMl and simple operation;

3.For residual current (leakage)protection,the residual current gear can be set online,with reclosing function; Monitor and track the

residual current of the line in realtime,and automatically adjust the gear to ensure the operation rate and reliability of the product;

4.Long delay,short delay and instantaneous three-stage protection,electronic tripping mode is applied,which s independent of supply

voltage;

5.High breaking ability could ensure the reliability of short circuit protection for the line;

6.Overvoltage protection,undervoltage protection,phase loss protection;

7. Real-time display of residual current,three-phase supply voltage and load current of the line;

8.Protection functions and parameters can be set and modified online;

9.Trip types (residual current,locking,overload,undervoltage,overvoltage,phase loss)can be identified & displayed,and can be

stored,inquired &deleted;

10.Network type has communication function,which can realize remote communication,remote telemetry,remote control and

remote adjustment.

11.Pluggable lightning protection module (optional)

12.Infrared communication function (optional)

Product Parameters

 

3.Main Technical Parameters

Specification/Model		SRM1E-125CY SRM1E-125CS	SRM1E-250CY SRM1E-250CS	SRM1E-400CY SRM1E-400CS	SRM1E-630CY SRM1E-630CS
Shell grade rated current (A)		125	250	400	630
No.of poles		3P+N	3P+N	3P+N	3P+N
Rated operating voltage Ue:(V)		AC   400/50HZ
Rated insulation voltage Ui (V)		800		1000
Rated impact withstand voltage (V)		8000
Flashing distance (mm)		×50		≠100
Timit short circuit breaking capacit Icu  (kA)		50		65	85
Operating short circuit breaking capacity  Ics  (kA)		35		42	65
Rated residual short circuit on (off) capacity I△m (kA)		12.5		16.25	21.25
Rated short-time withstand current		1.5	3	5	8
Residual current operating features		AC type
Rated residual operating current I△n (mA)		50/100/200/300/400/500/600/800 MCU automatic tracking or manual setting			100/200/300/400/ 500/600/800/1000 MCU automatic tracking ormanual setting
Residual operating time features		Delayed/non-delayed type
Limit non-drive time of delayed type  (s)		0.06:2I△n
Breaking time (s)		I△n≤0.5;21△n≤0.2;51△n≤0.15
Auto re-closing time (s)		20-60
Operational performance (times)	Powered	1500	1000	1000
	Not powered	8500	7000	4000
	Total	10000	8000	5000
Overload and short circuit features		Three-stage protection,electronically adjustable,see "Description of Protection features"for details
Overvoltage protection value (V)		Setting value (250~300)±5%
Undervoltage protection value (V)		Setting value (145~200)±5%
Link control delay time (ms)		≤40ms
Communication delay time (ms)		≤200ms

4.Description of Protection features 

4.1 Overload long delay protection
4.2 Short-circuit short-time delay protection
4.3 Instantaneous protection
4.4 Residual current protection features

4.5 Automatic reclosing

When the residual current exceeds the operating current value,the gear can automatically reclose after 20~ 60s,but the manual

closing is not limited by time.If the fault current is eliminated within 5s after closing,the closing is successful and the circuit breaker

runs normally;If the fault current is not eliminated,the circuit breaker trips again and is locked,so it cannot be reclosed automatically,but

must be closed manually.

4.6 Overvoltage protection function

When the line phase voltage is higher than the set value of overvoltage protection,the circuit breaker protection trips.When the line

voltage returns to normal,the circuit breaker can be automatically closed for operation.The setting value range of overvoltage protection

is 231V~330V,and the factory setting is 275V. Users can set or close the protection.

4.7 Undervoltage protection function

When the line phase voltage is lower than the set value of undervoltage protection,the circuit breaker protection trips.When the line

voltage returns to normal,the circuit breaker can be automatically closed for operation.

The setting value range of undervoltage protection is 88V~209V,and the factory setting is 145V.Users can set or close the protection.

4.8 Phase loss protection function

When the power supply terminal of the line is of phase loss,the circuit breaker protection trips.

When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.