Square D > 30 Amp 600 VAC/VDC Disconnect, Safety Switch, 3 Pole - NEMA 3R
For Square D safety switches, the "N" in NRB stands for Neutral.
NRB = Isolated terminal block equipped switch. For Square D RB models = No terminal block.
Manufacturer Part Number: H361RB
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Phase
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Three Phase
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Number of Poles
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3
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Maximum Current Rating
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30 Amps
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NEMA Class
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3R Rainproof
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Maximum Horse Power Rating
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- 5 hp 480 V at AC 50-60 Hz for 3 phase conforming to NEC 240.6
- 15 hp 480 V at AC 50-60 Hz for 3 phase conforming to NEC 430.52
- 7.5 hp 600 V at AC 50-60 Hz for 3 phase conforming to NEC 240.6
- 20 hp 600 V at AC 50-60 Hz for 3 phase conforming to NEC 430.52
- 5 hp 250 V at DC
- 15 hp 600 V at DC
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Maximum Power
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20 HP
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Electrical Connection
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Lugs
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Weight
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9.11 lbs. / 4.13 kg
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Dimensions
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7.55" W x 14.88" H x 4.86" D
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For inverters that do not include a DC disconnect, or when an additional DC disconnect is required, one of these 600 VDC disconnects can be used. Many utilities require an AC disconnect between a grid-tie inverter and the AC load center, close to the AC service entrance, and with a visible and lockable handle.
The Square-D 600 VDC-rated 30 A, 60 A, and 100 A three-pole safety switches are rated by Square-D to handle one 600 VDC circuit per pole for PV (although they are not UL-listed for this purpose). The 30 A switch is rated for 16 A short-circuit current (Isc at PV module STC) for non-fused versions, and 12.8 A (Isc) for fused versions. The 60 A switch is rated for 48 A (Isc) for non-fused versions and 38 A (Isc) for fused versions. The 100 A switch is rated for 80 A (Isc) for non-fused versions and 64 A (Isc) for fused versions.
All of the Square-D 600 VDC non-fused disconnects are rated for disconnecting one circuit at full rated current using two poles in series. Fused disconnects are rated for 80% of switch current rating at up to 600 VDC.
Use Class-R fuses of the proper voltage and amperage for fused disconnects. 600 V fuses will not fit into 240 VDC disconnects, and 250 VAC/125 VDC fuses will not fit into 600 V disconnects, and vice-versa.
Heavy duty UL-listed safety disconnect switches are offered fusible and non-fusible, NEMA 1 indoor rated or NEMA 3R outdoor rated, with external lockable handle and door. Service disconnect for AC or DC systems rated to 600 volts. 3R switches accept top bolt-on hubs.
