Type 1 + 2 surge protection unit DDC30S series

remote signalingDC powermodular

Product description
The DDC range comprises pluggable Type 1+2 surge protective devices (SPD) designed to protect equipment powered by DC distribution lines. High-energy MOV technology with an internal thermal disconnector provides reliable protection and safe end-of-life disconnection. The DDC30S-10-65 is specified for 48 Vdc systems.

Key features

• Combined SPD for DC supplies, 1-pole
• Type 1 + 2 protection
• Nominal discharge current In: 15 kA (8/20 µs)
• Max. discharge current Imax: 30 kA (8/20 µs)
• Impulse current by pole Iimp: 4 kA (10/350 µs)
• Pluggable module (hot‑swap capable)
• Remote signaling: output on changeover contact
• Standards compliance: prIEC 61643-41

Electrical Properties
SPD type: 1+2
Nominal DC voltage (Un-dc): 48 Vdc
Max. AC operating voltage (Uc): 50 Vac
Max. DC operating voltage (Uc): 65 Vdc
Residual current (leakage to ground) Ipe: < 0.2 mA
Follow current: None
Nominal discharge current In (15 x 8/20 µs impulses): 15 kA
Max. discharge current Imax (max. withstand @ 8/20 µs by pole): 30 kA
Impulse current by pole Iimp (max. withstand 10/350 µs by pole): 4 kA
Connection mode(s): +/PE or -/PE
Protection level +/PE (-/PE) @ In (8/20 µs): 300 V / -
Admissible short-circuit current (Isccr): 50 000 A

Mechanical Properties
Network type: DC
Technology: MOV (Metal Oxide Varistor)
SPD configuration: Single pole
Connection to network: Screw terminals: power 2.5-25 mm²; signal +/-: 1.5-10 mm²
Pluggable: Yes (replaceable module MDDC30-65)
Mounting: Symmetrical DIN rail 35 mm (EN 60715)
Housing material: Thermoplastic UL94 V-0
Operating temperature (Tu): -40 to +85 °C
Protection rating: IP20 (not for outdoor use)
Failsafe mode: Disconnection from DC network with mechanical red/green indicator
Remote signaling of disconnection: Output on changeover contact
Dimensions: 1TE (EN43880) — see product diagram
Weight: 0.096 kg

Norms
Standards compliance: prIEC 61643-41

Deconnector
Thermal disconnector: Internal
Recommended backup protection device: gG fuses, 50 A min. - 125 A max.

Schematics
Product wiring diagrams and technical schematics are provided.

Technical specifications

• Reference / Model: DDC30S-10-65
• Part Number: 828110121
• SPD type: 1+2
• Nominal DC voltage: 48 Vdc
• Max. DC operating voltage: 65 Vdc
• Max. AC operating voltage: 50 Vac
• Nominal discharge current In: 15 kA (8/20 µs)
• Max. discharge current Imax: 30 kA (8/20 µs)
• Impulse current by pole Iimp: 4 kA (10/350 µs)
• Protection level Up @ In (8/20 µs): 300 V
• Admissible short-circuit current Isccr: 50 000 A
• Technology: MOV
• Connection modes: +/PE or -/PE; Screw terminals 2.5-25 mm² (power), 1.5-10 mm² (signal)
• Pluggable module: Yes (spare module MDDC30-65)
• Mounting: Symmetrical DIN rail 35 mm (EN 60715)
• Housing material: Thermoplastic UL94 V-0
• Operating temperature: -40 to +85 °C
• Protection rating: IP20 (indoor use)
• Failsafe mode: Disconnection from DC network with mechanical red/green indicator
• Remote signaling: Output on changeover contact
• Dimensions: 1TE (EN43880)
• Weight: 0.096 kg
• Standards: prIEC 61643-41
• Thermal disconnector: Internal
• Recommended backup fuse: gG type, 50 A min. - 125 A max.