Citel Type 1 SPDs in Hyderabad — DS250VG / DS252VG / DACN1 Lightning Current
Vasundhara Performance Solutions is the authorised Hyderabad supplier for the Citel Type 1 (Class I) surge protection device range — IEC 61643-11 / EN 61643-11 Class I / Type 1 SPDs for installation at the main service entrance of buildings with external Lightning Protection System (LPS) per IS/IEC 62305. Citel DS250VG (Type 1+2+3 single-pole), DS252VG and DS254VG (multi-pole), and DACN1-25VGS (Type 1 standalone) cover Iimp ratings from 12.5 kA to 50 kA per pole on 10/350 µs lightning-current waveform. For industrial substations, telecom towers, hospital + data centre main incomers, and any installation with rooftop air-terminal lightning-protection system. Pan-India dispatch from Secunderabad warehouse.
See prices & order online Request Citel Type 1 SPD Quote Call: +91-9912825442Ex-GST · delivered to serviceable PIN codes · remote/ODA freight quoted separately · price valid 30 days. Not listed? WhatsApp us the part number and we will quote it.
Citel Type 1 SPD Range
Type 1 (Class I) SPDs are required at the main service entrance of buildings with external Lightning Protection System (LPS) — they discharge direct-strike lightning currents (10/350 µs waveform) before downstream Type 2 SPDs handle residual overvoltages.
Citel DS250VG — Type 1+2+3 AC SPD
Single-pole Type 1+2+3 AC SPD built on CITEL's patented VG technology, rated for direct lightning current to the 10/350 µs waveform. Installed at the main service entrance where a structure has an external lightning protection system. Note: DLA is CITEL's data and telecom protector, not an AC power device.
Citel DS252VG / DS254VG — Multi-Pole Type 1+2+3
Two-pole and four-pole assemblies of the DS250VG platform for single-phase and three-phase-plus-neutral supplies. Same VG spark-gap-plus-varistor coordination, factory-assembled so pole coordination is guaranteed.
Citel DACN1-25VGS — Type 1+2+3 SPD, 440 V
Three-phase-plus-neutral Type 1+2+3 SPD at Uc 440 V AC, Iimp 25 kA per pole, In 25 kA, Up 1.5 kV, response time 100 ns. Monobloc construction — one unpluggable module per phase. Where a pluggable Type 1 is required use DAC1-13VGS (Iimp 12.5 kA per pole, 275 V); for higher duty use DACN1-35VGS (Iimp 35 kA, Up 1.8 kV).
Citel DS50PV /12KT1 — Type 1+2 Photovoltaic SPD
DC-side Type 1+2 SPD for photovoltaic arrays with direct-strike exposure, available at 600 V, 1000 V and 1500 V DC. The /12KT1 suffix denotes the Type 1+2 rating; the /51 suffix is the Type 2 version. DS60VGPV covers the same duty.
Citel Type 1 Trim & Backup Protection
Backup MCBs / fuses + isolators sized for Type 1 SPD installation per IEC 61643-12 / IEC 60364 requirements — typical gG-class fuse 160-250 A for Iimp 25-50 kA SPDs. Coordination components for proper SPD-disconnection on end-of-life short-circuit failure.
Citel Specialty / Custom Type 1 SPDs
Custom Type 1 SPD configurations — railway-application Type 1 SPDs for Indian Railways traction substations + signalling-system protection, specialty marine / offshore Type 1 SPDs, defence-application Type 1 SPDs per mil-spec / IEC 61643-11 hybrid requirements.
Technical Specifications
Standard property values across the range. TDS / MSDS / per-batch COA available on enquiry.
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| Parameter | DS250VG-300 | DS252VG-300 | DS254VG-300 | DACN1-25VGS-40-440 | DAC1-13VGS-40-275 |
|---|---|---|---|---|---|
| Type (IEC 61643-11) | Type 1+2+3 | Type 1+2+3 | Type 1+2+3 | Type 1+2+3 | Type 1+2+3 |
| Uc — max continuous operating voltage | 255 V AC | 255 V AC | 255 V AC | 440 V AC | 275 V AC |
| Iimp (10/350 µs) per pole | 25 kA | 25 kA (Itotal 50 kA) | 25 kA (Itotal 100 kA) | 25 kA (Itotal 100 kA) | 12.5 kA (Itotal 50 kA) |
| In (8/20 µs) | 30 kA | 30 kA | 30 kA | 25 kA | 20 kA |
| Imax (8/20 µs) per pole | 70 kA | 70 kA | 70 kA | 70 kA | 50 kA |
| Up — voltage protection level | 1.5 kV (Up-in 1.1 kV) | 1.5 kV L/PE and N/PE | 1.5 kV L/PE and N/PE | 1.5 kV | 1.5 kV L/PE and N/PE |
| Technology | VG — gas-filled spark gap coordinated with a metal oxide varistor | ||||
| Configuration | 1-pole, L/N or L/PE | 1P+N | 3P+N (TN-S) | 3P+N, monobloc | 3P+N, pluggable per phase |
| Response time | not published | not published | not published | 100 ns | not published |
Figures are from CITEL's own datasheets for the variants named in each column. Ratings change with the network-code suffix (-120, -300, -400, -690, -1000) and with the /G, S and VG variants — we confirm the exact part and its ratings against your single-line diagram before quoting.
Standards compliance: IEC 61643-11 / EN 61643-11 (Class I / Type 1) · IEC 62305 (Lightning Protection System) · IS/IEC 62305 (Indian adoption of the lightning-protection standard) · IS / IEC 61643-11 · CE marked · UL 1449 (where applicable) · RoHS / REACH compliant · IEC 61643-31 (PV systems for DS250VG)
Application Areas by Building / Hazard Class
Where Citel Type 1 SPDs ship from our Hyderabad warehouse — by building lightning-protection-class (LPL per IEC 62305) and installation profile.
Industrial Substations with LPS
DLA Type 1+2 combined SPDs at the LV main switchboard of industrial substations with external Lightning Protection System (rooftop air-terminals + down-conductors). Cement plant electrical substations, steel plant power-receiving substations, refinery + petrochemical plant substations. LPL II / III typical for industrial buildings.
Telecom Tower Installations
DACN1-25VGS Type 1 standalone SPDs at the main service entrance of telecom tower-base power cabinets — for 4G / 5G base-station, microwave-link, mobile-tower power infrastructure. Critical lightning-current protection for tower-mounted electronics. LPL I / II typical for telecom towers (high lightning exposure).
Hospital + Data Centre Main Incomers
DLA Type 1+2 combined SPDs for hospital + data centre main service entrance — tier-3 / tier-4 data centres + tertiary-care hospital main electrical infrastructure. LPL II typical for tier-3 data centre, LPL I for tier-4 + critical hospital infrastructure. Pairs with our Citel Type 2 SPD downstream cascade.
Solar PV Utility-Scale Installations
DS250VG Type 1+2 DC SPDs at solar PV string combiner boxes + inverter inputs for utility-scale solar plants with rooftop / array-area air-terminal LPS protection. Critical for high-lightning-exposure solar installations across rural Telangana, AP, Karnataka, Maharashtra solar farms.
Indian Railways Traction Substations
Specialty Type 1 SPDs for Indian Railways traction substations + signalling-system protection. Railway-specific applications + military-railway protection. Northern, Southern, Eastern, Western, Central, South-Eastern, North-Western, etc. Indian Railways zones.
Buildings with External LPS Required
Type 1 SPDs are mandatory for buildings with external Lightning Protection System per IS/IEC 62305 — including high-rise commercial buildings, hospital complexes, schools / universities with explicit rooftop LPS, premium residential towers with LPS. Code requirement, not just best-practice.
Why Source Citel Type 1 SPDs from Vasundhara
For panel-builders + EPC contractors + MEP consultants specifying lightning-current SPDs — Iimp rating selection (12.5 vs 25 vs 50 kA) + spark-gap vs hybrid technology + Type 1+2 combined vs separate Type 1 selection shape system performance + insurance + factory-licence compliance.
1. Authorised Citel Distribution
Genuine Citel France product through Citel India's official distribution channel. Manufacturer authorisation documentation provided on enquiry. Cartridge-traceability from manufacturer to installation site — critical for warranty claims after lightning events.
2. Hyderabad Dispatch in 2 Working Days
Stocked SKUs ship within 2 working days from Secunderabad warehouse. Less-common configurations typically 5-7 working days from Citel India stock or factory dispatch. Replacement cartridges stocked for service contracts.
3. SPD Coordination Engineering
Free SPD coordination calculations for projects where Vasundhara is the supply partner — Type 1 / Type 2 / Type 3 cascade design per IEC 61643-12, distance-rule verification, energy coordination check, fuse / MCB selection for SPD upstream protection.
4. GeM & Project Pricing
GeM-registered seller. Citel SPDs available through GeM for PSU buyers. Project-pricing on bulk orders (50+ poles) for OEM panel-builders, EPC contractors, solar EPCs.
5. Single-Vendor Electrical Safety Kit
One PO for Citel Type 1 SPDs + companion SPDs (Type 1, 2, 3) + downstream isolators + earthing accessories. Reduces vendor count for panel-builders sourcing the complete LV protection kit. See our Citel brand page.
6. Compliance Documentation Pack
Per-shipment test certificates (CE, IEC 61643-11 / IEC 61643-21 type-test), factory test reports, manufacturer authorisation letters from Citel France. Suitable for IEC 60364 / IS 732 panel-builder audits, MEP consultant submittals, EPC project documentation.
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Frequently Asked Questions
Common questions from MEP consultants + EPC contractors + panel-builders sourcing Citel Type 1 SPDs through Vasundhara.
When do I need Type 1 SPD vs Type 2 SPD only?
Type 1 SPD is required when the building has external Lightning Protection System (LPS) — rooftop air-terminals + down-conductors connected to earth. The LPS captures direct lightning strikes; the Type 1 SPD discharges the resulting lightning currents (10/350 µs waveform) into the electrical service entrance protection. Buildings without external LPS (most urban commercial / industrial buildings without rooftop air-terminals) typically need only Type 2 SPDs at the main incomer + downstream cascade. Always perform IEC 62305-2 risk assessment to determine LPS requirement + corresponding SPD specification.
What is the difference between DS250VG, DS252VG, and DACN1-25VGS Type 1 SPDs?
DS250VG series: Type 1+2 combined SPD — single-device installation at main panel covering both lightning-current (Type 1) and downstream-overvoltage (Type 2) functions. Iimp 12.5 / 25 / 50 kA. The simplest installation. DS252VG series: higher-energy Type 1+2 combined SPD — Iimp 25 / 50 kA, In 50 kA (8/20 µs). For high-exposure installations or larger discharge capacity. DACN1-25VGS: Type 1 standalone SPD — used when Type 2 SPDs are installed separately at sub-distribution boards (cascade configuration). For larger industrial installations where cascade gives more flexibility than combined device.
How do I size Type 1 SPD Iimp rating for my installation?
Per IEC 62305-1 + IEC 61643-12: Iimp rating selection depends on Lightning Protection Level (LPL) + number of incoming services (power + telecom): LPL I (highest protection) — Iimp 100 kA total system; LPL II — 75 kA; LPL III — 50 kA; LPL IV (lowest) — 25 kA. Distribute the total Iimp across all incoming services + phases. For typical 3-phase + neutral incomer at LPL II: 25 kA per pole × 4 poles = 100 kA total. DLA / DS252VG series with Iimp 25 kA per pole satisfies LPL II for most installations. For LPL I: select Iimp 50 kA per pole DS250VG / DS252VG.
Are Citel Type 1 SPDs compatible with TT, TN-S, TN-C-S earthing systems?
Yes. Citel Type 1 SPDs (DS250VG, DS252VG, DACN1-25VGS) are available in configurations compatible with TT, TN-S, TN-C-S earthing systems per IEC 60364. Configuration choice (1P, 1P+N, 3P, 3P+N) is selected based on the specific earthing system — the SPD installation diagram in the Citel datasheet specifies the appropriate connection arrangement. For Indian installations: TN-C-S is most common; 3P+N or 4P (3P + separate N) is the typical Type 1 SPD configuration.
Do Type 1 SPDs require upstream backup fuse / MCB protection?
Yes — IEC 61643-11 / IEC 60364 requires Type 1 SPD upstream protection to disconnect on end-of-life short-circuit failure. Citel datasheets specify maximum upstream backup-protection rating per Type 1 SPD model — typically gG-class fuse 160-250 A for Iimp 25-50 kA SPDs, or equivalent MCB. Where the upstream main protection already meets this rating, dedicated SPD backup-protection may be omitted; otherwise install a dedicated SPD-disconnect fuse or MCB in series. We provide upstream-protection sizing as part of the SPD coordination engineering for projects where Vasundhara is the supply partner.
How does Citel Type 1 SPD compare to Phoenix Contact, ABB OVR PT, Schneider PRD?
All meet IEC 61643-11 Class I specifications with comparable lightning-current discharge performance. Citel's structural advantages: (1) Focused SPD specialisation since 1937 — wide spark-gap technology range across the Type 1 SPD portfolio, (2) Pluggable cartridge architecture across DS250VG / DS252VG / DACN1-25VGS simplifies field maintenance + cartridge replacement after lightning events, (3) Strong India distribution + stocking. For OEM panel-builders standardised on Phoenix or Schneider for system-coordination reasons, those alternatives are equivalent. For specification-driven selection (especially where pluggable spark-gap technology matters), the Citel range is often the closer match.
Can I procure Citel Type 1 SPDs through GeM for PSU procurement?
Yes. Vasundhara is GeM-registered seller. Citel Type 1 SPDs (DS250VG, DS252VG, DACN1-25VGS) available to PSU buyers on GeM for PSU buyers — Indian Railways, BHEL, NTPC, NLC India, Coal India, ONGC, defence establishments, state cement / steel / power utility corporations + state-utility solar projects. GFR-2017 compliant for deferred-payment supply. Documentation pack includes Udyam-MSME registration, manufacturer authorisation from Citel India, IEC 61643-11 type-test certificates, CE conformity declaration.
Is Vasundhara the authorised Citel Type 1 SPD distributor for Hyderabad?
Yes. Vasundhara Performance Solutions Pvt Ltd is the authorised Citel surge protection device distributor for Hyderabad, Telangana and Andhra Pradesh. We supply genuine Citel France products through Citel India's official distribution channel, with full manufacturer authorisation documentation provided on enquiry. For our complete Citel portfolio, see our Citel brand page.
Related Citel SPD & Lightning Protection Resources
Complete Citel SPD portfolio supplied by Vasundhara — single-vendor sourcing for panel-builders + EPC project teams.
CITEL Type 1 & Type 1+2 AC SPDs — prices
Delivered prices for standard serviceable locations in India. GST extra. Prices valid 30 days from 26 August 2026. Remote and ODA destinations are quoted separately — check your PIN code below.
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| Part No. | Description | Availability | Price (₹/pc, GST extra) | Order |
|---|---|---|---|---|
| DACN1-25CVGS-11-275 | Type 1+2+3 AC surge protector — Single phase. Uc 275 Vac, In 25 kA, Imax 100 kA, Iimp 25 kA, Up L/N: 1.5 kV; N/PE: 1.5 kV. CITEL P/N 64176. | Ready to dispatch — within 2 working days | ₹35,750 | Order on WhatsAppPay online |
| DACN1-25CVGS-31-275 | Type 1+2+3 AC surge protector — 3-phase+N. Uc 275 Vac, In 25 kA, Imax 100 kA, Iimp 25 kA, Up L/N: 1.5 kV; N/PE: 1.5 kV. CITEL P/N 64135. | Ready to dispatch — within 2 working days | ₹24,380 | Order on WhatsAppPay online |
| DS134VG-230 | Type 1+2+3 AC surge protector — 3-phase+N. Un 230 Vac, Uc 255 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA. CITEL P/N 571554. | Ready to dispatch — within 2 working days | ₹13,980 | Order on WhatsAppPay online |
| DAC1-13-31-275 | Type 1+2 AC surge protector — 3-phase+N. Uc 275 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA, Up L/N: 1.3 kV; N/PE: 1.5 kV. CITEL P/N 821710234. | Ready to dispatch — within 2 working days | ₹13,260 | Order on WhatsAppPay online |
| DS74US-480D | AC surge protector, 480V delta network — reference not confirmed on citel.fr | Ready to dispatch — within 2 working days | ₹13,230 | Order on WhatsAppPay online |
| DAC1-13S-31-275 | Type 1+2 AC surge protector — 3-phase+N. Uc 275 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA, Up 1.3 kV. CITEL P/N 821710244. | Ready to dispatch — within 2 working days | ₹12,350 | Order on WhatsAppPay online |
| DS134R-280/G | Type 1+2 AC surge protector — 3-phase+N. Un 230 Vac, Uc 280 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA, Up L/N: 1.3 kV; N/PE: 1.5 kV. CITEL P/N 571124. | Ready to dispatch — within 2 working days | ₹10,660 | Order on WhatsAppPay online |
| DS134RS-280/G | Type 1+2 AC surge protector — 3-phase+N, with remote signalling of disconnection. Un 230 Vac, Uc 280 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA. The RS option of DS134R-280/G. | On request | Price on request | Request price |
| DS134R-230 | Type 1+2 AC surge protector — 3-phase+N. Un 230 Vac, Uc 255 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA. CITEL P/N 571504. | Ready to dispatch — within 2 working days | ₹11,640 | Order on WhatsAppPay online |
| DS104R-400 | Type 1+2 AC surge protector, 3-phase+N (4-pole) | Ready to dispatch — within 2 working days | ₹10,400 | Order on WhatsAppPay online |
| DS104R-230/G/DE | Type 1+2 AC surge protector, 3-phase+N / 4-pole (DS100R series) | Ready to dispatch — within 2 working days | ₹9,750 | Order on WhatsAppPay online |
| DS132R-320 | Type 1+2 AC surge protector single-phase. Un 230 Vac, Uc 320 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA. CITEL P/N 571902. | Ready to dispatch — within 2 working days | ₹9,620 | Order on WhatsAppPay online |
| DS132R-280 | Type 1+2 AC surge protector single-phase. Un 230 Vac, Uc 280 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA. CITEL P/N 571102. | Ready to dispatch — within 2 working days | ₹8,120 | Order on WhatsAppPay online |
| DAC1-13VGS-11-275 | Type 1+2+3 AC surge protector — Single phase. Uc 275 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA, Up 1.5 kV. CITEL P/N 821730242. | Ready to dispatch — within 2 working days | ₹8,120 | Order on WhatsAppPay online |
| DAC1-13-11-320 | Type 1+2 AC surge protector single-phase. Uc 320 Vac, In 20 kA, Imax 50 kA, Iimp 12.5 kA, Up L/N: 1.6 kV; N/PE: 1.5 kV. CITEL P/N 821710332. | Delivery 5–6 weeks from order | ₹7,480 | Order on WhatsAppPay online |
| DS102R-230/G/DE | Type 1+2 AC surge protector, single-phase (2-pole), 230V | Ready to dispatch — within 2 working days | ₹6,220 | Order on WhatsAppPay online |
Every order is prepaid and carries a GST tax invoice against your GSTIN. Bulk or project quantities, special packing, or delivery outside standard serviceable areas — send an enquiry and we will quote.
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Specified DEHN? Our DEHN cross-reference page matches the Citel device on IEC 61643-11 type, Iimp, Up and Uc, with every figure’s basis stated. Specified OBO Bettermann? Our OBO cross-reference page translates the B and C letters into IEC types and matches the Citel device on the published ratings.