Product specifications

Appendix A Hardware Units Power Supply Units – Types SD821, SD822 and SD823
3BSE036351-510 A 361
Dielectric test voltage 3000 V AC (EN 60950).
Fuses and Protective Devices
Internal primary main fuses are arranged to meet the requirements of electrical
safety publications for connection to the Phase – Neutral terminals of the primary
main network; TN network, 1 (one) fuse. Recommended primary external fuse:
• Micro Circuit Breaker (MCB) 10 Amperes, characteristic B.
Table 110. Power Supply Units – Fuses and Protective Devices
Fuse SD821 SD822 SD823
Primary: Internal fuse 3.15 AT 4 AT 6.3 AT
Primary: Recommended external fuse
(1)
(1) Microcircuit Breaker (MCB), Characteristic B
10 A
(1)
10 A
(1)
10 A
(1)
Secondary: Short circuit <5 A <10 A <20 A
Secondary: Over-load protection 3 A> I 
I <5 A
6 A< I
I< 10 A
12 A< I
I<20 A
Secondary: Over-Voltage protection 32 V typ 29 V typ 35 V typ