Battery Storage
Surge Protector
— BESS DC SPD
The TPK-40-DC 24~220V is TrilPeak's dedicated battery storage surge protector for BESS and energy storage systems — one model, six voltage variants covering every DC bus architecture. IEC 61643-31 CE certified. Thermal protection standard. Optional remote fault signal (NO/NC dry contact) for EMS/BMS/SCADA integration. OEM/ODM available. Part of the complete DC SPD range.
Battery Storage Surge Protector Selection — Match Your DC Bus Voltage
Tell us your battery architecture and DC bus voltage — we will confirm the right Uc variant and configuration.
Residential & Commercial BESS · 48V–220V Main Bus
Lithium / LFP / NMC battery pack DC bus · PCS inverter protection · BMS protection
24V / 48V Auxiliary Power · BMS Control Circuit
24V or 48V auxiliary DC power supply · BMS control board · communications and monitoring circuits
Multi-Voltage · Complete Cabinet BOM · OEM Integration
Containerised BESS · multiple DC bus voltages in one system · OEM cabinet integration · CE product approval
Not sure which battery storage surge protector variant fits your architecture? Read the BESS surge protection guide → or send us your DC bus voltage — engineering reply within 24h.
Battery Storage Surge Protector — TPK-40-DC 24~220V Series
This battery storage surge protector covers every BESS bus architecture — from 24V control circuits to 220V main battery pack bus. Six DC voltage variants in one model. Thermal protection standard in every unit. Optional remote fault signal (NO/NC dry contact) for EMS/BMS/SCADA integration. Pluggable DIN rail, 2-pole, hot-swap without shutdown.
6 Voltage Options — Match Your Battery Storage Surge Protector to Your DC Bus
| Model | Uc (DC) | Typical BESS Application |
|---|---|---|
| TPK-40-DC 24V | 24Vdc | 24V control circuits · BMS sensor boards |
| TPK-40-DC 48V | 48Vdc | 48V auxiliary bus · communications · small residential BESS |
| TPK-40-DC 65V | 65Vdc | 48V nominal pack with elevated charge voltage · telecom hybrid |
| TPK-40-DC 85V | 85Vdc | 72V nominal battery pack · light EV and storage hybrid |
| TPK-40-DC 150V | 150Vdc | 120–130V nominal pack · modular commercial BESS |
| TPK-40-DC 220V | 220Vdc | 200V nominal lithium pack · utility-scale BESS main bus |
| All variants: Imax 40kA · In 20kA · 2-pole (DC+/DC−) · Thermal protection standard · Pluggable DIN rail · IEC 61643-31 CE certified · Up: see datasheet per Uc variant | ||
For BESS Integrators — Battery Storage Surge Protector Supply
Factory-direct supply with IEC 61643-31 CE documentation for product submittals and grid interconnection approvals across 50+ countries.
BESS cabinets are enclosed environments. TrilPeak includes thermal disconnect as standard — not a premium option — because in an enclosed battery cabinet, MOV thermal runaway is a fire risk, not an inconvenience.
TPK-40-DC all variants + PV DC SPD (co-located solar) + AC Type 1+2 SPD + signal SPD from one CE-certified factory.
Declaration of Conformity and IEC 61643-31 type test reports on request — supporting BESS product certification and grid interconnection approval submissions.
TrilPeak manufactures its own MOV chips. 100% routine electrical testing before shipment. Factory details →
For BESS Cabinet OEMs & System Integrators
TrilPeak's OEM programme covers all TPK-40-DC 24~220V variants for BESS integrators building the SPD into their cabinet or containerised unit design.
All six standard voltage variants plus non-standard Uc on request. Matched to your battery pack nominal voltage and auxiliary power rail specifications.
Your brand on the SPD body and packaging. CE documentation reissued under OEM part number for your product CE marking and grid approval processes.
Engineering samples in 7 days for design qualification. OEM details →
BESS SPD OEM — 24V to 220V, All Variants from One Factory
TrilPeak's OEM programme covers the full TPK-40-DC 24~220V range with custom labelling, packaging, and terminal configurations. Our ODM service supports custom housing for cabinet-integrated or containerised BESS applications. IEC 61643-31 CE documentation included. Samples in 7 days.
Battery Storage Surge Protector — Buyer FAQ
Why does a BESS need a battery storage surge protector on the DC bus?
The battery DC bus connects directly to PCS inverter power electronics and BMS control boards. Surge currents bypass the AC SPD entirely and damage these components directly. An IEC 61643-31 DC battery storage surge protector at the battery bus clamps surges before they reach the PCS and BMS — protecting assets that cost far more than the SPD.
Why is thermal protection standard — not optional?
Battery storage cabinets are enclosed with limited airflow. An ageing MOV in thermal runaway generates heat in this enclosed space, creating fire risk. TrilPeak includes thermal disconnect in every unit as standard — in a BESS environment it is a fire safety requirement, not an upgrade.
What Uc do I specify for my battery pack voltage?
Uc must equal or exceed the maximum continuous DC bus voltage including state-of-charge variation at the top of the charge curve. For a 200V nominal lithium pack with peak charge reaching 218–220V, specify Uc 220Vdc. Use the voltage table above to match your architecture.
Can one BESS site need multiple different Uc SPDs?
Yes — this is the norm on utility-scale BESS. A typical installation needs TPK-40-DC 220V for the pack bus, TPK-40-DC 48V for the auxiliary bus, and TPK-40-DC 24V for control circuits. TrilPeak supplies all variants from one factory — one BOM, one CE document set, one order.
How does the remote contact integrate with the EMS?
The optional 3-pin NO/NC dry contact connects to the EMS or BMS I/O terminal block. When SPD status changes (normal → fault), the EMS dashboard generates a maintenance alert. Standard dry contact — no proprietary protocol. Compatible with all major BESS EMS and SCADA platforms.
Is OEM supply available for BESS cabinet manufacturers?
Yes. TrilPeak's OEM programme covers all TPK-40-DC 24~220V variants with custom Uc, private label, packaging, and terminal configurations. CE documentation included for your product certification process. Engineering samples in 7 days.
Request Battery Storage Surge Protector Datasheet & Pricing
TrilPeak supplies IEC 61643-31 CE certified BESS surge protectors to energy storage integrators and OEMs in 50+ countries.