KT-AC-SPD/B1 Series

Product Description
KT Surge Protection Devices - Product Specification

KT Surge Protection Devices

China's Premier SPD Manufacturer

As China's premier surge protection device (SPD) manufacturer, KT combines rigorous standards compliance with   industrial-scale production.

Annually delivering millions of certified units, our technical teams deploy market-driven engineering backed by uncompromising quality and client-focused service.

SPD Product

Product Parameter Table

ParameterSymbol275V320V385V440V
Nominal AC Voltage (50/60Hz)Un230V230V230V400V
Maximum Continuous Operating Voltage (AC)Uc275V320V385V440V
Nominal Discharge Current (8/20 μs)In20kA - 60kA
Maximum Discharge Current (8/20 μs)Imax50kA - 120kA
Impulse Discharge Current (10/350 μs)Iimp7kA - 12.5kA7kA - 12.5kA7kA - 9kA6.25kA - 9kA
Voltage Protection LevelUp≤1.5-1.8kV≤1.6-2.0kV≤1.8-2.8kV≤1.6-2.4kV
Response TimetA< 25 ns
Back-Up Fuse (max)-100 - 200 A gL / gG
Short-Circuit Current Rating (AC)Isccr25 kA
Operating Temperature RangeTa-40 °F to + 158 °F [-40 °C to + 70 °C]
Conductor Cross Section (max)-2 AWG (Solid, Stranded) / 4 AWG (Flexible)
Conductor Cross Section (max)-35 mm² (Solid, Stranded) / 25 mm² (Flexible)
Mounting-35 mm DIN Rail, EN 60715
Degree of Protection-IP 20 (built - in)
Operating State / Fault Indication-Green ok / Red defect
Remote Contacts (RC)-Optional
RC Switching Capacity-AC: 250 V / 0.5 A; DC: 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
RC Conductor Cross Section (max)-16 AWG (Solid) / 1.5 mm² (Solid)


Product DimensionsProduct Application

Why Partner With KaiTai?

We enable bespoke OEM/ODM AC/DC SPD production, empowering collaborators with scalable market-entry strategies.

Customization

Customization Excellence (OEM/ODM Advantage)

  • Zero-MOQ Expertise: Specializing in micro-batch development (no minimums). Share your samples → get preliminary designs in 3-5 business days.
  • Advanced Digital Engineering: Using 3D scanning + CAD modeling with value-engineered material options. Proven across 50+ SME   partnerships.
  • Seamless Brand Integration: Full-surface customization for products (LOGO/specs/models), labels (QR/IDs), and packaging – at no extra cost.

Value-Driven Engineering (Enhance   Profitability)

  • Cost Optimization: Senior engineers (8+ years) conduct structural refinement using SolidWorks, achieving 10-15% production expense reduction.
  • Modular Assembly Advantage: Proprietary modular   systems streamline assembly processes by 20% – optimal for 50-1,000 unit production volumes.
Value Engineering
Production Systems

Adaptive Production Systems   (Scalable Order Fulfillment)

  • Flexible Capacity: Compact CNC machining + industrial-grade 3D printing support orders from 50-1,000 units.
  • Validated Prototyping: Dedicated 15-person technical team executes end-to-end prototype validation, confirming production   feasibility before volume manufacturing.

Quality Transparency (Verifiable   Supply Chain)

  • Triple Verification Protocol: Incoming component   verification → production-phase sampling → 100% conformity validation.
  • Quality Performance: Sustained 99.5% defect-free rate with 12-month core warranty + live quality documentation.
  • Audit-Ready Facilities: Unrestricted client/supplier assessments   accommodated.
Quality Assurance
Customer Support

Collaboration-First Support (Built for Manufacturing Partners)

  • Guaranteed 4-Hour Response: Direct founder oversight on all projects.
  • Full-Cycle "Design-Trial-Production" Service: Comprehensive implementation   support + 3 complimentary design revisions for   inaugural orders.
  • Strategic Account Management: Proactive refinement   initiatives with dedicated performance tracking.

Elevate Electrical Safety

Custom & Standard AC/DC Surge Suppressor

Distributors/Wholesalers

Expand catalog with certified   surge protective device. Maximize margins via competitive OEM   pricing + technical support.

Brands & OEMs

Launch white-label SPDs with IEC/EN 61643   compliance. Full branding   integration.

Engineers & Procurement

Access project-ready documentation, compliance   support & custom design services.

E-Commerce

Shelf-ready SPDs + dropshipping.   Includes digital marketing packs.

Strategic Alliance Program

For construction/energy network leaders:

  • Earn referral commissions
  • Access exclusive distribution terms
  • Co-develop application-specific solutions

Power Resilience Together – KaiTai drives your surge protection growth.

ACT NOW

Join the KT Surge Protection Partnership Program

① OEM/ODM

Submit specs → Instant DFM analysis

② Distribution

Request region-specific terms

③ Referrals

Explore tiered commissions

CONTACT US

Subject: "OEM" / "Distribution" / "Alliance"

Launch your competitive edge today.