Premium DC Surge Protection 275V 255V, 20kA In, 40kA Imax DC Surge Protection Device

• Customization: Available
• Type: Power Source Arrester
• Structure: Zinc Oxide Arrester
• Model NO.: TMSPD7
• Installation: Tandem Arrester
• Application: AC/DC System
• Size: Small
• Operation Voltage: Low Voltage
• Shape: Cuboid
• Material: PBT Fireproof
• Certification: ROHS, ISO9001, CE
• Brand: Timelec
• Uc: 275V / 255V
• In: 20kA
• Imax: 40kA
• Up: 1.5kV
• IEC: IEC61643-11
• IP: IP20
• Protection: Class II, T2
• Transport Package: Carton Box
• Specification: 18mm
• Trademark: Timelec, OEM / Private Label brands
• Origin: China
• HS Code: 853620
• Production Capacity: 1000000
• Package Size: 4.60cm * 7.80cm * 3.60cm
• Package Gross Weight: 0.190kg

Product Description

Product Description

Our SPD Surge Protective Devices are your steadfast sentinels, designed with cutting-edge precision to protect your prized electronics from the capricious wrath of voltage surges. While massive surge events, such as a formidable lightning strike, may release hundreds of thousands of volts and threaten to devastate equipment, they account for merely 20% of transient surges. The true, silent culprits are the internal surges, contributing a whopping 80%. Although not as powerful as lightning, their frequent occurrence and relentless nature slowly degrade the sensitive electronics within your establishment.


A power surge represents a brief, yet significant, voltage overload that threatens the integrity of electrical devices, commonly resulting in premature failure. The havoc wreaked by surges spans across an array of household essentials, undermining and curtailing the service life of:

• Heating and Air Conditioning Systems
• Washers and Dryers
• Water Heaters
• Ranges & Refrigerators
• Lighting
• Entertainment Systems

NEW 2020 National Electrical Code Requirements
According to the revolutionary 2020 National Electrical Code, all newly constructed and renovated homes must be equipped with Listed and Approved Type 1 or Type 2 Surge Protective Devices, setting a benchmark in safety standards.

Type 1:
A permanently connected Surge Protective Device that acts as a formidable barrier against both external and internal surges. It provides adaptable installation possibilities for both the interior and exterior of your residence.

Type 2:
A potent, permanently connected Surge Protective Device strategically positioned within or near the breaker box, designed to defend against both internal and external surges.

Type 3:
Providing enhanced protection with a point-of-use Surge Protective Device, it adds an extra layer of defense when used alongside Type 1 or Type 2 SPDs, ensuring full adherence to the 2020 code requirements.

For unrivaled protection, deploy a combination of Type 1, 2, and 3 SPDs to ensure your home is optimally fortified against any electrical disturbances.

Product Parameters

Max Continuous Operating Voltage				Ucpv	500VDC	600VDC		1000VDC		1500VDC
Nominal Discharge Current				In	20kA	20kA		20kA		20kA
Max Discharge Current				lmax	40kA	40 kA		40kA		40kA
Protection level				Up	2.8kV	3.0kV		3.5kV		5.5 kV
Rated shortcircuit current				IscCI	100A
lcpv					0.2 mA
Connection mode					paralle
Response Time				tA	25ns
Back up fuse					LT-SSD40
Remotecommunication					With
Remote communication connection					1411:NO,1112:NC
Remote contact rated current					220V/0.5A
Associateddisconnectors
Thermal disconnector					internal
Fuses					Fuses type gG100A
ground fault breaker					None
Mechnicalcharacteristics
Connection					By screw terminals:6-35mm
Terminal Screw Torque					2.5 Nm
RecommendedCable cross Section					≥16mm²
Insertwire length					15mm
Mounting					DIN rail 35mm (EN60715)
Degree of Protection					IP20
Housing					PBT
Flame retardant grade					UL94 V0
Operating temperature					-40ºC~+70ºC
Operatingrelative humidity					5%-95%
Working atmospheric pressure					70kPa~106kPa
Connection					By screw terminals:6-35mm

Installation Instructions

Selection Criteria for Surge Protection Device (SPD):
Selecting the ideal Surge Protection Device (SPD) for your power distribution system is paramount. Focusing on the critical aspects that define a robust lightning protection system ensures that the electrical infrastructure within your building remains optimally safeguarded.

• Surge Protection Device (SPD)
  • Determining the Quantity of SPD Units
  • SPD Type and Specifications
  • A fundamental aspect is assessing the exposure level to accurately determine the SPD's maximum discharge current, known as Imax, which is crucial for effective protection.
• Short Circuit Protection Device - An Integral Component
  • Crucial Consideration: Maximum discharge current, or Imax;
  • Installation Point Specifics: Short-circuit current, or Isc, must be accounted for.

Additional vital characteristics for choosing an SPD are often predefined for the specific electrical installation in question.

• SPD Specifications: Number of poles;
• Key SPD Attribute: Voltage protection level, Up;
• Essential Operating Parameter: Operating voltage, Uc.

Detailed Analysis in This Sub-sectionDesigning an Effective Electrical Installation Protection SystemThis section delves into the comprehensive criteria for selecting a protection system, considering installation characteristics, the equipment needing protection, and the environmental factors.

SPD Placement and Types:


Optimal SPD Connection Guidelines:
To ensure maximum efficiency, SPD connections should be kept as short as possible. This reduces the voltage protection level (installed Up) at the terminals of the equipment, thereby enhancing protection.

It is essential that the total length of SPD connections to both the network and the earth terminal block does not exceed 50 cm.

SPD Enclosure Choices: Options include a plastic enclosure or a metal enclosure for your SPD.

 

RED: Time to Replace
When the indicator shifts to RED, it is a clear signal that the product has reached its operational limit. Immediate replacement is necessary to ensure continued protection and performance.