Telecom Surge
Protector
— −48V DC SPD
The TPK-40-DC 48V is TrilPeak's dedicated telecom surge protector for base station −48V DC power systems. IEC 61643-31 CE certified. 40kA Imax, thermal protection standard, optional remote fault signal (NO/NC dry contact) for NMS/NOC integration. Pluggable DIN rail, hot-swap. Part of the complete DC SPD range.
Telecom Surge Protector — TPK-40-DC 48V for −48V Base Station Systems
Built Specifically for −48V Telecom DC Architecture
The ITU-T and ETSI standard for telecom power is −48V DC. A telecom surge protector for this system must be Uc-rated at 48Vdc and internally configured for the floating negative bus topology — not a generic DC SPD reassigned to a telecom application.
The TPK-40-DC 48V is TrilPeak's dedicated telecom surge protector for −48V DC base station power systems. Clamps induced lightning surges on the −48V bus before they reach the rectifier, BBU, and RRU. Thermal protection standard. Optional remote fault signal for NMS/NOC integration. Pluggable cartridge, hot-swap without powering down the −48V bus.
Need a different DC bus voltage? View the full DC SPD range (24V–1500V) →
Telecom Surge Protector — Base Station Installation Positions
A complete base station surge protection solution covers both the AC input and the −48V DC bus. Both positions serve different protection zones — neither replaces the other.
A Type 1+2 AC SPD or Type 1 AC SPD at the AC power input protects the rectifier AC input from grid-borne and direct lightning surges. Required for all tower sites per IEC 62305.
Installed on the −48V DC bus downstream of the rectifier, upstream of the BBU/RRU loads. Dedicated protection for all telecom equipment on the −48V bus. Optional remote fault signal connects to the power management unit or NMS for proactive maintenance alerting.
For sites with external data lines or Ethernet backhaul, a network signal SPD protects communication lines from conducted surges. Recommended for open-field tower sites in high lightning density zones.
Need a complete tower site BOM? TrilPeak supplies AC SPD + −48V DC telecom surge protector + signal SPD from one CE-certified factory — one order, one document set.
For Telecom System Integrators & Tower Operators
Factory-direct supply with IEC 61643-31 CE documentation for equipment approval and site commissioning across 50+ countries.
IEC 61643-31 Declaration of Conformity and type test reports on request — supporting telecom equipment certification and local regulatory approval in all major markets.
TrilPeak manufactures its own MOV chips and performs 100% routine electrical testing before shipment. Factory details →
Telecom surge protector (−48V DC) + Type 1+2 AC SPD + signal SPD from one CE-certified factory. One order, one document set.
Telecom infrastructure projects across Asia-Pacific, Middle East, and Africa. About TrilPeak →
For Telecom Power System OEMs & Integrators
TrilPeak's OEM programme covers the TPK-40-DC 48V for integrators building a certified telecom surge protector into their power distribution cabinet or rectifier system.
48V is the standard Uc for ITU-T/ETSI −48V architecture. Additional Uc variants (24V, 65V, 85V, 150V, 220V) available for non-standard telecom DC bus architectures.
Your brand on the SPD body and packaging. CE documentation reissued under OEM part number for system-level product approval submissions.
Engineering samples in 7 days for design qualification. Flexible MOQ for project-based ordering. OEM programme →
Telecom Surge Protector OEM — Custom Label, Uc & Configuration
TrilPeak's OEM programme covers the TPK-40-DC 48V with custom labelling, packaging, and terminal configurations. Our ODM service supports custom housing for cabinet-embedded applications. IEC 61643-31 CE documentation included. Samples in 7 days.
Telecom Surge Protector — −48V DC SPD Buyer FAQ
Why does a base station need a telecom surge protector on the −48V bus?
The AC SPD protects the rectifier AC input from grid-side surges only. The −48V DC bus is exposed to conducted surges from the tower structure, antenna feeds, and cable runs — these bypass the AC SPD entirely and damage BBU, RRU, and microwave equipment. A dedicated IEC 61643-31 telecom surge protector on the −48V bus is required alongside the AC SPD.
What Uc rating is correct for a −48V telecom system?
Specify Uc 48Vdc. The TPK-40-DC 48V is matched to the ITU-T/ETSI standard −48V DC telecom power architecture. Up voltage protection level is ≤0.3kV — low clamping voltage relative to sensitive telecom equipment input ratings.
How does the remote fault signal connect to the NMS?
The optional 3-pin NO/NC dry contact connects to the base station BMS, power monitoring unit, or rectifier controller. When SPD status changes from normal to fault, the contact state change triggers a maintenance alert in the NMS or NOC dashboard. Standard dry contact — no proprietary protocol required.
Is CE documentation available for telecom equipment approvals?
Yes. IEC 61643-31 type test certificate and Declaration of Conformity are available on request — supporting telecom equipment certification and local regulatory approval in all major markets. No additional lead time — request alongside your BOM enquiry.
Can TrilPeak supply a complete tower site BOM?
Yes. TrilPeak supplies the complete site BOM: TPK-40-DC 48V telecom surge protector for the −48V DC bus + Type 1+2 AC SPD for the rectifier AC input + signal SPD for data lines — all CE certified, from one factory, one purchase order.
Is OEM supply available for telecom power integrators?
Yes. TrilPeak's OEM programme covers the TPK-40-DC 48V with custom labelling, packaging, and terminal configurations. Additional Uc variants available for non-standard telecom DC bus architectures. Engineering samples in 7 days.
Still have a technical question about your site specification? Our engineers reply within 24h.
Request Telecom Surge Protector Datasheet & Pricing
TrilPeak supplies IEC 61643-31 CE certified −48V telecom surge protectors to base station integrators and tower operators in 50+ countries.