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gR FUSE NH1LgR-B 1140V AC 50A-250A

gR FUSE NH1LgR-B 1140V AC 50A-250A

Product catalog summary

Specifications:
The NH1LgR-B series is designed for operation at 1140V AC with current ratings ranging from 50A to 250A. It operates under the class gR, providing protection characteristics suitable for various applications. The interrupting capacity is rated at 100,000 amperes at 1140V AC.

Technical Parameters:
The document lists part numbers and their corresponding current ratings, ranging from 50A to 250A. Each part number is associated with safety approvals, denoted by symbols: ● indicates approved, while ○ indicates pending approval. The U11 suffix denotes suitability for 1140V AC.

Electrical Characteristics:
The rated current (In) is specified with conventional time and current parameters. For currents ≤ 63A, the conventional time is 1 hour with a non-fusing current of 1.25In and a fusing current of 1.6In. For currents between 63A and 160A, the conventional time is 2 hours, and for currents between 160A and 400A, it is 3 hours.

Average I-T Characteristics Curve:
The document includes an I-T curve for reference, illustrating the time-current characteristics for various current ratings (50A, 63A, 80A, 100A, 125A, 160A, 200A, 250A). This curve helps in understanding the response time of the fuse under different current loads.

Standards:
The product complies with the UL 248-13 standard, ensuring it meets specific safety and performance criteria.

Catalog excerpts

NH1LgR-B 1140V AC 50A-250A Class of Operationg: gR 保护特性：gR 51±2 170±3 INTERRUPTING CAPACITY 150.8±3/ 分断能力： 170±3AC 100,000 amperes at 1140V Unit 单位：mm Type: NH1LgR-B Part No.: 1LgR (amp rating )U11B Type: NH1LgR-B Part No.: 1LgR (amp rating )U11BD 170±3 AVERAGE I-T CHARACTERISTICS CURVE 170±3 ELECTRICAL CHARACTERISTICS/ 电气特性 : CONVENTIONAL CURRENT 约定电流 CONVENTIONAL CONVENTIONAL CONVENTIONAL FUSING TIME(H) 约定时间 NON-FUSING CURRENT(A) CURRENT(A) 约定不熔断电流约定熔断电流 Type: NH1LgR-B Part No.: 1LgR (amp rating )U11BC Rated Current In(A) 额定电流 In(A)

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