SINOFUSE RSZ307-01-T5Z High-Speed Semiconductor Fuse Series, 125–400 A, 1000 VDC
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SINOFUSE RSZ307-01-T5Z is a 1000 VDC aR high-speed semiconductor fuse series covering seven rated-current options from 125 A through 400 A. The manufacturer presents these models as bolted-connection, partial-range protection fuses with a shared 1000 VDC voltage rating, aR utilization category, size code 01, and breaking capacities of 50 kA at L/R=10 ms and 150 kA at L/R=5 ms. Variant-level differences include rated current, pre-arcing I²t, fusing I²t, and power loss. This page consolidates the verified models into one selection matrix so procurement teams can compare ratings, identify the required variant, and submit a precise B2B RFQ.
RSZ307-01-T5Z Series Overview
The RSZ307-01-T5Z family uses a common bolted-connection construction and size 01 mechanical format across the listed current ratings. The manufacturer specifies a common product weight of 340 g with a ±5% tolerance. The supplied technical drawing presents the fuse outline and mounting dimensions in millimeters for mechanical-fit review. Packaging information on the manufacturer sheet specifies a minimum package quantity of 1 piece per box and a carton quantity of 30 pieces. Electrical protection characteristics and model-specific energy values should be checked against the requirements of the protected circuit before ordering or replacing an installed fuse.
Technical Specifications
| Specification | Series Value |
|---|---|
| Product Type | Bolted-connection partial-range high-speed fuse |
| Rated Voltage | DC 1000 V |
| Rated Current Range | 125–400 A |
| Utilization Category | aR |
| Breaking Capacity | 50 kA at L/R=10 ms; 150 kA at L/R=5 ms |
| Connection | Bolted connection |
| Size Code | 01 |
| Product Weight | 340 g ±5% |
| RoHS | Compliant |
Technical data reference: SINOFUSE “RSZ307-01-T5Z 1000V Series High-Speed Fuse” datasheet.
RSZ307-01-T5Z Model Selection
The series provides seven verified rated-current options from 125 A to 400 A. Select the required model by rated current, then compare the pre-arcing I²t, fusing I²t, and power-loss values because these characteristics differ between variants. The 1000 VDC rating, aR category, breaking capacity, size code, and bolted construction are shared across the listed models. Confirm the complete MPN and the electrical and mechanical requirements of the protected equipment before replacement.
| Exact MPN | Shopify Option / Rated Current | Pre-Arcing I²t (A²s) | Fusing I²t (A²s) | Power Loss (W) |
|---|---|---|---|---|
| RSZ307-01-T5Z-125A1000V | 125 A | 1450 | 9600 | 38 |
| RSZ307-01-T5Z-160A1000V | 160 A | 2690 | 17850 | 49 |
| RSZ307-01-T5Z-200A1000V | 200 A | 5090 | 33700 | 53 |
| RSZ307-01-T5Z-250A1000V | 250 A | 9000 | 59900 | 61 |
| RSZ307-01-T5Z-315A1000V | 315 A | 18200 | 125000 | 68 |
| RSZ307-01-T5Z-350A1000V | 350 A | 24200 | 161000 | 73 |
| RSZ307-01-T5Z-400A1000V | 400 A | 33000 | 218000 | 82 |
Verified Applications
The manufacturer identifies the RSZ307-01-T5Z series for energy-storage industry applications. The fuses may be used for short-circuit protection of components and equipment where the specified electrical and mechanical requirements match the application.
B2B Sourcing and Replacement Support
Apexon Supply provides B2B sourcing support for the SINOFUSE RSZ307-01-T5Z series. For replacement requirements, verify the selected rated current, 1000 VDC rating, aR category, I²t characteristics, power loss, and mechanical fit against the existing equipment specification. Similar current ratings or physical formats should not be treated as interchangeable without technical alignment.
For RFQ review, submit the complete MPN, selected current rating, required quantity, and relevant equipment or application requirements. Apexon Supply can assist with exact technical identification, variant comparison, and sourcing review for this fuse series.
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