RMM2 series plastic shell circuit breakerDetailed product description：

Product Usage

The RMM2 series plastic shell circuit breaker has a rated insulation voltage of 690V and is mainly used in distribution networks with AC 50Hz, rated working voltage of 400V, rated current of 630A and below. It is used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit and other faults. Circuit breakers can also provide overload, undervoltage, and short-circuit protection for electric motors. After the RMM2 plastic shell circuit breaker is equipped with a ground fault protection overcurrent release, in addition to the original overload and short circuit protection functions, a new ground fault protection function has been added. It can provide protection against fires or other hazards caused by grounding faults that cannot be detected by general overcurrent protection devices. After it is equipped with a communication module, it can upload the information on the circuit breaker to the control computer through the RS485 interface, and can manipulate the closing and opening of the circuit breaker through the computer.  

Technical data and performance of RMM2 series plastic shell circuit breaker:

model	RMM2-250			RMM2-630
Shell level rated current (Inm) A	two hundred and fifty			six hundred and thirty
Polar number (P)	3. 4
Rated current (In) A	one hundred	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
Setting current regulation range (Ir1) A	40-100	64-160	100-250	160-400	252-630
Rated impulse withstand voltage (Uimp) V	eight thousand
Rated insulation voltage (Ui) V	six hundred and ninety
Rated working voltage (Ue) V	four hundred
Rated ultimate short-circuit breaking capacity (Icu) kA	sixty-five
Rated operating short-circuit breaking capacity (Ics) kA	fifty
Usage category	A/AC-3
over-current release	bse250、bse253			bse630、bse631、bse633
Note: The four pole circuit breaker is only suitable for use in category A, and its installation method is not plug-in or drawer type. The rated current of the N-pole of the four pole circuit breaker is the same as that of the other three poles

Intelligent release device	BSE250, BSE630 (basic type)	BSE631 (multifunctional type)
Long delay setting current Ir1=In × k1 × k2 A	0.4~1In (level 48)	0.4~1In (level 32)
Long delay setting time t1s	non-adjustable	adjustable
T1 (at 1.5Ir1) s	＜240	fifteen	thirty		sixty		one hundred and twenty		two hundred and forty
T1 (at 7.2Ir1) s	4s＜t1≤10s	zero point five seven	one point one five		two point three		four point six five		nine point one five
precision		±10
Short delay setting current Ir2=Ir1 × k3A	2-10 (Level 8)	2-10 (Level 8)
Short delay setting time t2s	non-adjustable	adjustable
		0		zero point one		zero point two		zero point three
precision	±20%	±20%
Instantaneous setting current Ir3=In × k4A	12In	2～12In
Pre alarm indication: 0.9Ir1 ≤ Ie ＜ 1.05Ir1	The pre alarm indicator light is always on	The pre alarm indicator light is always on
Pre alarm indication Ie>1.05Ir1	The warning indicator light is flashing	The warning indicator light is flashing

RMM2 series plastic shell circuit breaker