RDB8A-63 series miniature circuit breaker – DC MCB

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Product Detail

Application

Parameters

Samples & Structures

Dimensions

Product Introduction

RDB8A-63 miniature circuit breaker (hereinafter referred to as circuit breaker), mainly used in the protection distribution lines with AC 50Hz, rated working voltage not exceeding 400V, rated current not exceeding 63A, and rated short-circuit breaking capacity not exceeding 6000A; it can also be applied to DC voltage unipolar not exceeding 110V, two poles not exceeding 220V, rated DC current not exceeding 63A, rated DC short-circuit breaking capacity not exceeding 6000A in protective distribution lines; used for infrequent connection, breaking and switching of lines, with overload , Short circuit protection function. At the same time, it has powerful auxiliary function modules, such as auxiliary contacts, contacts with alarm indication, shunt release, undervoltage release, remote trip control and other modules.

Features

1.Process guaranteed performance

2.Small volume, large capacity

3.Super-strong wiring capacity

4.Good insulation between phases

5.Super-strong conductivity

6.Low temperature rise and power consumption

RDB8A series circuit breaker is a circuit breaker product with high current limiting capability and high reliability specially developed by People Electric for the communication industry. Mainly used in power distribution systems such as main cabinets, power cabinets, power distribution cabinets, and outdoor cabinets in the communication industry.The product complies with: GB/T 10963.2 standard.

Main technical data

Overcurrent tripping characteristics: Under normal installation conditions and reference ambient temperature (30-35)°C

the overcurrent tripping characteristics of the circuit breaker meet the requirements in Table 1.

The rated short-circuit breaking capacity of the circuit breaker is shown in Table 2.

Number	Trip type	Rated current In	AC experimental current		Appointed time	Expected outcome	lnitial state
1	C	All values	1.13In		t≥1h	No trip	Cold state
2	C	All values	1.45In		t<1h	Trip	lmmediately after serial number 1 cools down
3	C	≤32A	2.55In		1s<1h<60s		Cold state
3	C	>32A	2.55In		1s<1h<120s		Cold state
4	C	≤32A	5In	7In	0.1s≤t≤15s	Notrip	Cold state
4	C	>32A	5In	7In	0.1s≤t≤30s	Notrip	Cold state
5	C	All values	10In	15In	t<0.1s	Trip	Cold state

Trip type	Rated current A	Rated short circuit segment capacity	cosφ
C	1≤In≤63	6000	0.75-0.80

Mechanical and electrical lfe:Under the specified rated voltage, the circuit breaker makes and breaks the rated current,the power factor is 0.85-0.9, and it is tested at the frequency of 120 (>32A) or 240 (>32A) operating cycles per hour. The mechanical and electrical life is 4000 times.

Parameters (2)

Parameters (3) Parameters (4)

Main technical data

Overcurrent tripping characteristics: Under normal installation conditions and reference ambient temperature (30-35)°C

the overcurrent tripping characteristics of the circuit breaker meet the requirements in Table 1.

The rated short-circuit breaking capacity of the circuit breaker is shown in Table 2.

Number	Trip type	Rated current In	AC experimental current		Appointed time	Expected outcome	lnitial state
1	C	All values	1.13In		t≥1h	No trip	Cold state
2	C	All values	1.45In		t<1h	Trip	lmmediately after serial number 1 cools down
3	C	≤32A	2.55In		1s<1h<60s		Cold state
3	C	>32A	2.55In		1s<1h<120s		Cold state
4	C	≤32A	5In	7In	0.1s≤t≤15s	Notrip	Cold state
4	C	>32A	5In	7In	0.1s≤t≤30s	Notrip	Cold state
5	C	All values	10In	15In	t<0.1s	Trip	Cold state