SUP4 DC Surge Protective Device 500V 20KA 2P
Application SSPD surge protective device, protect against lightning surge voltages in solar system (photovoltaic power supply system). These units must be installed in parallel on the DC networks to be protected and provide common and different modes protection. Its installed location are recommended at both ends of the DC power supply line ( solar panel […]
Application
SSPD surge protective device, protect against lightning surge voltages in solar system (photovoltaic power supply system).
These units must be installed in parallel on the DC networks to be protected and provide common and different modes protection. Its installed location are recommended at both ends of the DC power supply line ( solar panel side and inverter/converter side), especially if the line routing is external and long.High energy MOVs equipped with specific thermal disconnectors and related failure indicators.
Specification
| SSPD series surge protector | SSPD | |||
| PV DC-specific(LEC 66143-1/EN 61643-1 1) | ||||
| Pole | 2P | |||
| Electrical Parameter | ||||
| Classified test | II | |||
| Uoc max(V DC) | 500 | |||
| Uc(V CD) | 500 | |||
| In(8/20)us(KA) | 20 | |||
| Imax(8/20)us(KA) | 40 | |||
| Up(KV) | 2 | |||
| Remote control and indication | ||||
| Indication window | ||||
| Piug-in Module | ||||
| Remote signal contact | ||||
| Remote signal contact | maximum working voltage(V) | 250 AC/30V DC | ||
| maximum working current(A)IA(250V/AC | IA(250V/AC) | |||
| IA(30V DC | IA(30V/AC) | |||
| Wiring&installation | ||||
| Wiring capacity(mm2) | Hard wire | 4~25 | ||
| Flexible wire | 4~16 | |||
| Stripping length(mm) | 10 | |||
| Terminal screwa | M5 | |||
| Torque(Nm) | Main ciruit | 3.5 | ||
| Remote signal contact | 0.25 | |||
| Protection class | All profile | IP40 | ||
| Connection port | IP20 | |||
| Installation environment | NO obvious shock and vibration | |||
| Altitude(m) | ≤2000 | |||
| Working Temperature | -3.0~+70 | |||
| Relative humidily | 30%~90% | |||
| How to install | Installed with H-7.5/DIN35 steel mounting rail | |||
| Size(mm)(W×H×L) | W | 36 | ||
| H | 90 | |||
| L | 67.6 | |||
| Weight(kg) | 0.24 | |||
-
How Motor Circuit Breakers Enhance Protection and Reliability in Industrial Systems
Motor-driven equipment forms the backbone of industrial production, powering conveyors, pumps, c...
Date:2025-11-24 -
Introduction In modern power stations where uninterrupted energy delivery, precise load distr...
Date:2025-12-10
Why Is Short-Circuit Coordination Important in a Motor Starter?
A motor starter does more than switch a motor on and off. It must also protect the motor circuit when...
Date: 2026/06/11
Circuit Breaker vs Contactor vs Overload Relay: What Is the Difference?
Quick Answer A circuit breaker, contactor, and overload relay are often installed together in a motor control circuit, but they...
Date: 2026/06/09
What Wire Size Mistakes Can Make a 60 Amp Breaker Unsafe?
Quick Answer A 60 amp breaker wire size should not be selected from the breaker rating alone. Although 6 AWG copper...
Date: 2026/06/08
What Is the Purpose of a Miniature Circuit Breaker in a Low-Voltage Electrical System?
Quick Answer The main purpose of a Miniature Circuit Breaker is to protect low-voltage electrical wiring and circuits against excessive current...
Date: 2026/06/05
Why Is MCB Protection Not Only About Rated Current?
Quick Answer MCB protection is not only about rated current because an MCB must protect the whole circuit, not just...
Date: 2026/06/03