DC-side disconnectors for photovoltaic power supply systems in accordance with IEC 60364-712:2002 10 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 KG41B 2 x Ø 25 F K B E Ø 25 H 17 Output + – + – Input Input KG20B/KG32B 2 x Ø 25 B K F 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 ( KG32B from 26 A: 35 °C over 24 hours with peaks of up to 40 °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) KG20B/KG32B: 6 mm² KG41B: 16 mm² KG20B/KG32B: 4 mm² KG41B: 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 KG20B.T206/P3.KL11V 70040674 KG20B.T106/P3.KL11V 70046570 650 V DC 18 A 18 A 25 A 22 A 780 V DC 1000 V KG32B.T206/P3.KL11V 70040675 KG32B.T106/P3.KL11V 70046572 500 V DC 25 A 22 A 25 A 22 A 600 V DC 1000 V KG41B.T206/P3.KL11V 70040676 KG41B.T106/P3.KL11V 70046573 650 V DC 32 A 32 A 40 A 40 A 780 V DC 1000 V KG20B.T206/P3.KL11V 70040674 KG20B.T106/P3.KL11V 70046570 800 V DC 12 A 12 A 21 A 21 A 1000 V DC 1000 V KG32B.T206/P3.KL11V 70040675 KG32B.T106/P3.KL11V 70046572 650 V DC 25 A 22 A 25 A 22 A 780 V DC 1000 V KG41B.T206/P3.KL11V 70040676 KG41B.T106/P3.KL11V 70046573 800 V DC 20 A 20 A 28 A 28 A 1000 V DC 1000 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 KG20B/ KG32B 1,25 Nm KG41B 1,80 Nm KG20B/ KG32B 9 KG41B 10 2T3 2L1 1T1 1L3 Input Output + – + – Switching program: 2-pole, 6 contacts per circuit (2 x 3 in series) KG20B KG32B KG41B B 100 145 E — 124 F 178 229 H 93 107 K 190 250 500 V DC : 25 A 650 V DC : 18 A / 25 A / 32 A 800 V DC : 12 A / 20 A 1 x 2-pole 500 V DC / 650 V DC / 800 V DC
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