EATON 167621 SPCT2-335-1+NPE Type 2 Surge Protective Device

The EATON 167621 SPCT2-335-1+NPE is a Type 2 surge protective device engineered for 1+NPE system configurations, making it suitable for TN-S and TT earthing systems. Its 335 V AC maximum continuous operating voltage and 20 kA nominal discharge current provide robust protection against transient overvoltages, while the integrated thermal disconnect enhances operational safety. With a compact 2-module DIN rail design, it integrates seamlessly into distribution boards.

Highlights

• Type 2 SPD for 1+NPE systems (TN-S/TT)
• Max. continuous operating voltage Uc: 335 V AC
• Nominal discharge current (8/20 µs): 20 kA
• Max. discharge current (8/20 µs): 40 kA
• Voltage protection level Up: < 1.5 kV
• Response time: < 25 ns
• Integrated thermal disconnect
• DIN rail mounting, 2 modules wide

In daily use

Installed on a 35 mm DIN rail, the SPCT2-335-1+NPE occupies only 2 TE (modules), saving space in enclosures. Its fast response time of under 25 ns ensures sensitive equipment is protected from surges. The device operates reliably across a wide temperature range from -40 to +80 °C, and its halogen-free thermoplastic housing meets fire safety requirements.

Full specifications

• System configuration: 1+NPE (TN-S, TT)
• Max. continuous operating voltage (Uc): 335 V AC
• Nominal discharge current (In) (8/20 µs): 20 kA
• Max. discharge current (Imax) (8/20 µs): 40 kA
• Voltage protection level (Up): < 1.5 kV
• Response time (tA): < 25 ns
• Max. pre-fuse: 125 A gL/gG
• Short-circuit withstand capability (Isccr): 50 kA
• Mounting type: DIN rail 35 mm
• Number of modules (TE): 2
• Integrated thermal disconnect: Yes
• Remote signaling contact: No
• Degree of protection: IP20
• Operating temperature range: -40 to +80 °C
• Standards compliance: IEC 61643-11, EN 61643-11
• Housing material: Thermoplastic, halogen-free

Final note

The EATON SPCT2-335-1+NPE combines high surge capacity with a compact footprint, making it a practical choice for protecting electrical installations in commercial and industrial environments.