JR20 サーマルリレー

プロの高品質 JR20 サーマルリレーのメーカーとして、当社の工場から JR20 サーマルリレーを安心してご購入いただけます。また、最高のアフターサービスとタイムリーな納品を提供します。JR20 サーマル過負荷リレーは、AC 50Hz、最大 660V の電圧、最大 630A の電流の回路に適しており、過負荷、欠相、三相不平衡から保護します。 ACモーター。

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製品説明

Wenzhou Changjiu Technology Co., Ltd. is a professional China JR20 Thermal Overload Relay manufacturer and supplier, known for its quality service. Adhering to the pursuit of perfect quality of products, so that our JR20 Thermal Overload Relay have been satisfied by many customers. In order to ensure the quality and customer needs, we have cooperated with domestic power groups with strong production strength. We will strictly screen each supplier and send videos to customers to watch.

JR20 Thermal Overload Relay are suitable for circuits with AC 50Hz, voltages up to 660V, and currents up to 630A, to protect against overload, phase failure and three phase unbalance of AC motor.

JR20 Thermal Overload Relay Details

Application

JR20-10L series thermal overload relay are suitable for overload and phase-failure protection of AC motors with frequency of 50/60Hz, voltage up to 660V, current up to 0.16-630A under 8-hours duty or uninterrupted duty.

Functions provided by these relays are: Phase-failure protection, temperature compensation, ON/OFF indication, and manual/automatic reset.

Applicable Standards: National Standard: GB 14048, International Standards: IEC 60947-4-1

LR20- L, L shows installed as single units

The relays can be mounted onto contactors or installed as single units.

Operating Conditions

The altitude couldn t exceed 2000m.

Ambient temperature: -5 ~+55 degree centigrade and the average temperature no more than +35 degree centigrade in 24 hours.

Atmosphere: Comparative humidity no more than 50% at max +40 degree centigrade, and it may be higher at a lower temperature. The lowest average temperature no more than +20 degree centigrade in the wettest month.

The maximum average comparative humidity of this month could not exceed 90%, The change of temperature leading to dew on the product must be considered.

Class of pollution: Class 3.

The slope between installation surface and vertical surface could not exceed plus and minus 5 degree

Keeping away from explosive, corrosive and electric atomy.

Keeping dry.

The product should be used and installed at certain place without any shock, vibration etc.

Technical Data

Item			JR20-25L	JR20-63L	JR20-160L	JR20-630L
Rated operational current			25	63	160	630
Rated operational voltage			660	660	660	660
Phase-failure protection			Yes	Yes	Yes	Yes
Manual/Auto reset			Yes	Yes	Yes	Yes
Temperature compensation			Yes	Yes	Yes	Yes
Releasing indicator			Yes	Yes	Yes	Yes
Test button			Yes	Yes	Yes	Yes
Stop button			Yes	Yes	Yes	Yes
Auxiliary			1NO+1NC	1NO+1NC	1NO+1NC	1NO+1NC
NC 95-96		127V rated current A	4.3	4.3	4.3	4.3
		220V rated current A	2.5	2.5	2.5	2.5
		380V rated current A	1.5	1.5	1.5	1.5
NC 97-98		220V rated current A	1.6	1.6	1.6	1.6
		380V rated current A	1.0	1.0	1.0	1.0
Mounting			as single unit	as single unit	as single unit	as single unit
Conductor cross section (mm2)	Main circuit	Solid or stranded conductor	1.5~6.0	4.0~25	10~95	480A 2 x 150
	Auxiliary circuit	Solid or stranded conductor	1.5~6.0	4.0~25	10~95	> 480A 2 x 185
		Terminal screw	M5	M6	M8	M10
		Solid or stranded conductor	1.0	1.0	1.0	1.0
		Terminal screw	M3.5	M3.5	M3.5	M3.5

Protection Characteristics

Item	NO	Times the setting current		Release time	Test condition
Overload protection	1	1.05		> 2h	Start from Cold status
	2	1.2		< 2h	Start from Hot status right after item no. 1
	3	1.5		< 2m	Start from Hot status right after item no. 1
	4	7.2		2s< Tp< 10s	Start from Cold status
Phase - failure protection		Any two phases	Another phase
	5	1.0	0.9	> 2h	Start from Cold status
	6	1.15	0	< 2h	Start from Hot status right after item no. 1
	7	3pole 1.0		> 2h	Start from Cold status
	8	2pole 1.32	1pole 0	< 2h	Start from Hot status right after item no. 1