3.15 Protect the Drive during Failures
110 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
◆ Branch Circuit Protection for 400 V Class (HD)
Use the fuses specified in this document to prepare the drive for use on a circuit that supplies not more than
100,000 RMS symmetrical amperes and 480 Vac when there is a short circuit in the power supply.
The built-in short circuit protection of the drive does not provide branch circuit protection. The user must provide
branch circuit protection as specified by the National Electric Code (NEC), the Canadian Electric Code, Part I
(CEC), and local codes.
Table 3.18 Factory-Recommended Branch Circuit Protection: 400 V Class (HD)
Drive Model
Maximum Applicable Motor
Output
kW (HP)
Input Voltage < 460 V
Maximum Applicable Motor
Output
kW (HP)
Input Voltage ≥ 460 V
Input Current Rating
A
Semiconductor Protection
Fuse Rated Current
Manufacturer: EATON/
Bussmann
4002 0.55 (0.75) 0.55 (0.75) 1.9 FWH-50B
4004 1.1 (1.5) 0.75 (1) 3.5 FWH-50B
4005 1.5 (2) 1.5 (2) 4.7 FWH-50B
4007 2.2 (3) 2.2 (3) 6.7 FWH-60B
4009 3 (4) 3 (4) 8.9 FWH-60B
4012 4.0 (5) 3.7 (5) 11.7 FWH-60B
4018 5.5 (7.5) 5.5 (7.5) 15.8 FWH-80B
4023 7.5 (10) 7.5 (10) 21.2 FWH-90B
4031 11 (15) 11 (15) 30.6 FWH-150B
4038 15 (20) 15 (20) 41.3 FWH-200B
4044 18.5 (25) 18.5 (25) 50.5 FWH-200B
4060 22 (30) 22 (30) 43.1 FWH-225A
4075 30 (40) 30 (40) 58.3 FWH-250A
4089 37 (50) 37 (50) 71.5 FWH-275A
4103 45 (60) 45 (60) 86.5 FWH-275A
4140 55 (75) 55 (75) 105 FWH-300A
4168 75 (100) 75 (100) 142
FWH-325A
FWH-400A
*1
4208 90 (125) 90 (125) 170 FWH-500A
4250 110 (150) 110 (150) 207 FWH-600A
4296 132 (175) 150 (200) 248 FWH-700A
4371 160 (200) 185 (250) 300 FWH-800A
4389 200 (250) 220 (300) 373 FWH-1000A
4453 220 (300) 260 (350) 410 FWH-1200A
4568 250 (335) 300 (400) 465 FWH-1200A
4675 315 (400) 335 (450) 584
FWH-1400A
FWH-1600A
*1
*1 A fuse with a large rated current for applications with repeated loads is recommended.
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