DC-side disconnectors for photovoltaic power supply systems in accordance with IEC 60364-712:2002 9 www.krausnaimer.com Data valid only if the pre-assembled bridges have not been modified. * Valid for ungrounded or midpoint-grounded PV grids, overvoltage category III, pollution degree III D1 B K F D2 H 17 + – Output + – Input Input General Data Switch disconnectors in accordance with EN 60947-3, VDE 0660 part 107 Utilization category for photovoltaic applications: DC-PV2 Connecting and disconnecting a PV circuit, where severe overcurrent may occur and where the current can flow in both directions DC-21B Switching of resistive loads, including moderate overloads Ambient temperature (enclosed): 50 °C over 24 hours with peaks of up to 55 °C Finger-safe terminals in accordance with VDE 0660-514 and BGV A3, protection class IP 20 Maximum conductor cross section (use only copper conductors) single wire or stranded wire flexible wire without / with wire-end ferrules (according to DIN 46228) KG20/KG32: 6 mm² KG41: 16 mm² KG20/KG32: 4 mm² KG41: 10 mm² Mounting Plastic enclosure, protection class IP 66 / 67, fully insulated, knock-out entries Handle red, in OFF-position lockable with padlocks, front plate background yellow, cover coupling with interlock Name Art. No. Name Art. No. Ue Ie DC-PV2 Ie DC-21B Max. UL PV Ui * 50 °C 1 60 °C 2 50 °C 1 60 °C 2 KG20.T204/P3.KL51V 70040671 KG20.T104/P3.KL51V 70046567 450 V DC 18 A 18 A 25 A 25 A 540 V DC 690 V KG32.T204/P3.KL51V 70040672 KG32.T104/P3.KL51V 70046568 450 V DC 25 A 23 A 25 A 23 A 540 V DC 690 V KG41.T204/P3.KL11V 70040673 KG41.T104/P3.KL11V 70046569 450 V DC 32 A 32 A 40 A 40 A 540 V DC 690 V KG20.T204/P3.KL51V 70040671 KG20.T104/P3.KL51V 70046567 500 V DC 12 A 12 A 21 A 21 A 600 V DC 690 V KG32.T204/P3.KL51V 70040672 KG32.T104/P3.KL51V 70046568 500 V DC 18 A 18 A 21 A 21 A 600 V DC 690 V KG41.T204/P3.KL11V 70040673 KG41.T104/P3.KL11V 70046569 500 V DC 20 A 20 A 28 A 28 A 600 V DC 690 V ¹ enclosed up to 50 °C over 24 hours with peaks of up to 55 °C | ² enclosed up to 60 °C over 24 hours with peaks of up to 65 °C Wiring diagram Twist torque for clamping screws Stripped length KG20/ KG32 1,25 Nm KG41 1,80 Nm KG20/ KG32 9 KG41 10 N T3 T1 T2 Input Output + – + – Switching program: 2-pole, 4 contacts per circuit (2 x 2 in series) KG20 KG32 KG41 B 85 100 D1 2 x Ø 25 2 x Ø 25 D2 Ø 20 Ø 25 F 150 178 H 82 93 K 160 190 450 V DC : 18 A / 25 A / 32 A 500 V DC : 12 A / 18 A / 20 A 1 x 2-pole 450 V DC / 500 V DC
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