Product description:

• For installation at LPZ 0A-1 or higher.
• Protect low voltage equipment against lightning and surge damages.
• Specially designed for TT/TN-S system (“3+1” circuit).
• Applied in SPD Class Ⅰ+Ⅱ (Class B+C) for various power supply system of lightning current surge protection.
• Designed according to GB 18802.1/IEC 61643-1.

Main characteristics:

• Three-phase protection for TT/TN-S system (“3+1” circuit).
• Adopt hermetical GDT technology, high follow current extinguishing capability.
• Double thermal disconnection devices to provide more reliable protection.
• Multifunctional connection for conductors and busbars.
• Green window will change to red when fault occurs, also provide remote alarm terminal at the same time.
• High discharge.
• Safe and reliable.

Technical data:

• Type: BT P BCM 25 RM/3+N.
• Order number: 800 915.
• Rated voltage (maximum continuous AC voltage) Uc: 255V (L-N, N-PE).
• Lightning impulse current (10/350) Iimp: 100KA (L+N-PE).
• Lightning impulse current (10/350) Iimp: 25KA (L-N), 75KA (N-PE).
• Nominal discharge current (8/20) In: 50KA (L-N), 75KA (N-PE).
• Voltage protection level Up: ≤1.5KV (L-N), ≤2.5 KV (L-N).
• Follow current extinguishing capability at Uc If: 32A fuse will not be triggered at 2kArms.
• Response time tA: ≤100ns.
• Maximum backup fuse (L): 200A gL/gG.
• Maximum backup fuse (L-L´): 125A gL/gG.
• TOV voltage UT: 355V / 5 sec (L-N), 1200V/200ms.
• Operating temperature range (parallel wiring) tup: -40℃~+80℃.
• Cross-sectional area: 35mm2 solid/50mm2 flexible.
• Mounting on: 35mm DIN rail.
• Enclosure material: purple (module)/light gray (base) thermoplastic, UL94-V0.
• Dimension: 8 mods.
• Test standards: YD/T 1235.1; GB 18802.1; IEC 61643-1.
• Certification: CE (LVD, EMC).
• Type of remote signaling contact: switching contact.
• Switching contact AC: 250V/0.5A.
• Switching contact DC: 250V/0.1A; 125V/0.2A; 75V/0.5A.
• Cross-sectional area for remote signaling contact: maximum 1.5mm2 solid/flexible.