Introduction: Why New Energy Demands New Connectors
Driven by global carbon-neutrality commitments and the energy transition, solar PV, wind power, and energy storage have become the three pillars of the new power system. The connectors used in them face requirements very different from those in automotive or 3C applications: long-term exposure to UV, ozone, acid rain, salt spray, and thermal shock; continuous operation at 1500V DC and hundreds of amps; and strict compliance with IEC 62852 (PV), IEC 61800 (wind), UL 1973 (storage), and other industry-specific standards.
Kronz, a Chinese manufacturer specializing in M-series industrial connectors, has deployed its M8 / M12 / M16 / M23 product lines in volume across solar tracking, wind pitch control, and energy-storage BMS / PCS applications. This guide maps out the Kronz connector landscape for the new-energy industry.
Market Opportunity: From Generic to Scenario-Driven
Throughout 2025, Chinese connector brands — including CAZN, Phoenix Contact, Stäubli (倍仕得), QC Solar (快可电子), Zhengcheng Electric (正成电气), and Zhanye Electric (展业电气) — have all pivoted to scenario-driven solutions, releasing targeted products for solar tracking, wind pitch systems, storage PACKs, PCS DC sides, combiner boxes, and inverters. The density of coverage on Sekorm and automation-network channels points to one clear fact: generic products are being replaced by scenario-specific solutions.
Kronz responds with a dedicated "M-series connector × new energy" matrix that addresses harsh-environment reliability head-on.
Solar Tracking: Distributed I/O and Limit-Signal Connections
Application Scenarios
Drive motor ↔ controller signal feedback in single- and dual-axis trackers
Signal transmission for tilt sensors and encoders on trackers
Low-speed signal and power for illumination / wind-speed sensors
String monitoring and temperature sensing inside combiner boxes
Kronz Product Allocation
M8 field-installable connector (3 / 4 PIN, A-code) — used for tilt sensors and limit switches in low-speed signal loops. IP67 rating is sufficient for outdoor dust and splash protection.
M12 field-installable connector (4 / 5 PIN, A-code) — used for tracker drive-motor encoder feedback and power, rated up to 250V / 4A. Selected SKUs upgrade to IP68 for simulated field arrays and coastal PV plants.
M12 overmolded cable (5 PIN, A-code) — standard tracker harness cable, UV-resistant PUR / TPE jacket, ≥10-year service life.
Wind Pitch: Vibration Resistance and Reliable Power Links
Application Scenarios
Pitch motor ↔ pitch driver (the core control link of the pitch system)
Encoder, vibration sensor, and temperature sensor inside the nacelle
Auxiliary power and signal interfaces near the slip ring between nacelle and tower
Differing corrosion-class needs for onshore vs offshore turbines
Kronz Product Allocation
M12 field-installable connector (5 / 8 PIN, A/B-code) — pitch-motor power and position return; engineered for –40°C cold-start and high-vibration operation inside the hub.
M16 field-installable connector (3+PE / 6+PE PIN) — 690V high-withstand for pitch-driver cabinets; designed for tight coupled high-frequency vibration.
M23 field-installable connector (6 / 8 / 12 PIN) — high-pin-count interface integrating power and signal for nacelle-to-tower connections.
Applicable Standards
IEC 61400-1 / IEC 61400-25 — Wind turbine generator systems
Energy Storage BMS / PCS: Stable High-Voltage Signal Channels
Application Scenarios
Per-cell voltage and temperature acquisition inside the storage PACK
CAN / RS485 communication between BMS and PCS
Power connection between PCS DC side and combiner cabinets inside storage containers
Coolant inlet / outlet sensor loops in liquid-cooled PACKs
Kronz Product Allocation
M8 field-installable connector (4 PIN, A-code) — per-cell voltage and temperature acquisition; IP68 protection against coolant penetration.
M12 field-installable connector (5 / 8 PIN, A-code) — CAN / RS485 communication between BMS and PCS; superior shielding for energy-storage EMC.
M12 field-installable connector (4 PIN, T-code) — T-code is defined by IEC 61076-2-111 specifically for power and charging applications; rated 63V DC / 12A, ideal for PACK power.
M16 field-installable connector — integrated PCS DC-side power and signal monitoring.
Applicable Standards
UL 9540 / UL 9540A — Energy storage system safety
IEC 62619 — Industrial lithium batteries
GB/T 36276 — Traction batteries for electric vehicles
Kronz Product Matrix for New Energy
Scenario
Recommended Model
PIN
Protection
Standard
Solar tracker (signal)
M08 A-code field
4 PIN
IP67 / IP68
IEC 62852
Solar tracker drive
M12 A-code field
5 PIN
IP67
IEC 62852
Wind pitch
M12 A-code field
8 PIN
IP67 (–40°C)
IEC 61400
Wind nacelle cabinet
M16 field
3+PE / 6+PE
IP67
IEC 61800
Wind tower
M23 field
6 / 12 PIN
IP67
IEC 61400-25
Storage BMS acquisition
M08 A-code field
4 PIN
IP68
UL 9540
Storage PCS comms
M12 A-code field
5 PIN
IP67
IEC 62619
Storage PACK power
M12 T-code field
4 PIN
IP67
IEC 61076-2-111
Core Technologies: IP68 / 1500V DC / IEC 62852
IP68 Outdoor Weatherproofing
Outdoor conditions demand connectors that stay sealed after immersion at 1 m depth for over 30 minutes. Through dual O-ring and lock-nut design, Kronz upgrades its M8 / M12 field-installable connectors to IP68, suitable for coastal PV arrays, offshore wind, and storage-container condensation.
1500V DC High-Voltage
Next-generation PV systems are migrating from 1000V to 1500V DC, cutting line losses by 30–40%. To handle this, Kronz increases creepage margins, improves the Comparative Tracking Index (CTI), and uses PBT+LCP hybrid housings — making the M12 family fully qualified for 1500V DC applications.
IEC 62852 PV Standard
IEC 62852 is the dedicated safety standard for PV systems. The Kronz M12 PV-specific series provides IP68 protection, IP2X finger-safe contact prevention, and a dual-locking DLC structure — a fully interoperable alternative to the de facto MC4 / MC4-Evo form factor.
Field Cases
Qinghai Golmud 200MW PV Plant — Kronz M12 A-code 5 PIN field connectors deployed in 8,000+ solar trackers, stable operation for 5 years.
Shandong Offshore Wind Farm — Kronz M16 field connectors integrated with 3.6MW turbine pitch systems, DNV-certified.
Q1. Why do solar, wind, and storage applications require specialized connectors?
A. Long-term UV, ozone, acid rain, salt spray, and thermal-shock resistance; 1500V DC and high-current handling; and compliance with IEC 62852, IEC 61400, UL 1973, and similar standards make general-purpose connectors inadequate.
Q2. What is the difference between IP67 and IP68?
A. IP67 protects against temporary immersion (1 m for 30 minutes). IP68 supports continuous immersion under manufacturer-defined conditions and is required for coastal PV, offshore wind, and storage-container environments.
Q3. Why is 1500V DC becoming the new PV standard?
A. 1500V DC reduces line losses by 30–40%, enabling longer string lengths and lower BOS cost. They require greater creepage, higher CTI, and PBT+LCP hybrid housings.
Q4. What is the M12 T-code connector used in storage?
A. T-code is defined by IEC 61076-2-111 for power and charging applications. Kronz M12 T-code 4 PIN is rated 63V DC / 12A, ideal for PACK power and BMS signal loops.
Conclusion & Contact
From PV arrays to combiner boxes, from wind hubs to storage PACKs, the connector is no longer a passive component — it is the first line of reliability in the new-energy system. Kronz is committed to providing stable, fast, and reliable connection solutions across the entire M8 / M12 / M16 / M23 portfolio for solar, wind, and storage customers.
Selecting or evaluating a new-energy connector? Talk to a Kronz application engineer today.
Introduction: Why New Energy Demands New Connectors
Driven by global carbon-neutrality commitments and the energy transition, solar PV, wind power, and energy storage have become the three pillars of the new power system. The connectors used in them face requirements very different from those in automotive or 3C applications: long-term exposure to UV, ozone, acid rain, salt spray, and thermal shock; continuous operation at 1500V DC and hundreds of amps; and strict compliance with IEC 62852 (PV), IEC 61800 (wind), UL 1973 (storage), and other industry-specific standards.
Kronz, a Chinese manufacturer specializing in M-series industrial connectors, has deployed its M8 / M12 / M16 / M23 product lines in volume across solar tracking, wind pitch control, and energy-storage BMS / PCS applications. This guide maps out the Kronz connector landscape for the new-energy industry.
Market Opportunity: From Generic to Scenario-Driven
Throughout 2025, Chinese connector brands — including CAZN, Phoenix Contact, Stäubli (倍仕得), QC Solar (快可电子), Zhengcheng Electric (正成电气), and Zhanye Electric (展业电气) — have all pivoted to scenario-driven solutions, releasing targeted products for solar tracking, wind pitch systems, storage PACKs, PCS DC sides, combiner boxes, and inverters. The density of coverage on Sekorm and automation-network channels points to one clear fact: generic products are being replaced by scenario-specific solutions.
Kronz responds with a dedicated "M-series connector × new energy" matrix that addresses harsh-environment reliability head-on.
Solar Tracking: Distributed I/O and Limit-Signal Connections
Application Scenarios
Drive motor ↔ controller signal feedback in single- and dual-axis trackers
Signal transmission for tilt sensors and encoders on trackers
Low-speed signal and power for illumination / wind-speed sensors
String monitoring and temperature sensing inside combiner boxes
Kronz Product Allocation
M8 field-installable connector (3 / 4 PIN, A-code) — used for tilt sensors and limit switches in low-speed signal loops. IP67 rating is sufficient for outdoor dust and splash protection.
M12 field-installable connector (4 / 5 PIN, A-code) — used for tracker drive-motor encoder feedback and power, rated up to 250V / 4A. Selected SKUs upgrade to IP68 for simulated field arrays and coastal PV plants.
M12 overmolded cable (5 PIN, A-code) — standard tracker harness cable, UV-resistant PUR / TPE jacket, ≥10-year service life.
Wind Pitch: Vibration Resistance and Reliable Power Links
Application Scenarios
Pitch motor ↔ pitch driver (the core control link of the pitch system)
Encoder, vibration sensor, and temperature sensor inside the nacelle
Auxiliary power and signal interfaces near the slip ring between nacelle and tower
Differing corrosion-class needs for onshore vs offshore turbines
Kronz Product Allocation
M12 field-installable connector (5 / 8 PIN, A/B-code) — pitch-motor power and position return; engineered for –40°C cold-start and high-vibration operation inside the hub.
M16 field-installable connector (3+PE / 6+PE PIN) — 690V high-withstand for pitch-driver cabinets; designed for tight coupled high-frequency vibration.
M23 field-installable connector (6 / 8 / 12 PIN) — high-pin-count interface integrating power and signal for nacelle-to-tower connections.
Applicable Standards
IEC 61400-1 / IEC 61400-25 — Wind turbine generator systems
Energy Storage BMS / PCS: Stable High-Voltage Signal Channels
Application Scenarios
Per-cell voltage and temperature acquisition inside the storage PACK
CAN / RS485 communication between BMS and PCS
Power connection between PCS DC side and combiner cabinets inside storage containers
Coolant inlet / outlet sensor loops in liquid-cooled PACKs
Kronz Product Allocation
M8 field-installable connector (4 PIN, A-code) — per-cell voltage and temperature acquisition; IP68 protection against coolant penetration.
M12 field-installable connector (5 / 8 PIN, A-code) — CAN / RS485 communication between BMS and PCS; superior shielding for energy-storage EMC.
M12 field-installable connector (4 PIN, T-code) — T-code is defined by IEC 61076-2-111 specifically for power and charging applications; rated 63V DC / 12A, ideal for PACK power.
M16 field-installable connector — integrated PCS DC-side power and signal monitoring.
Applicable Standards
UL 9540 / UL 9540A — Energy storage system safety
IEC 62619 — Industrial lithium batteries
GB/T 36276 — Traction batteries for electric vehicles
Kronz Product Matrix for New Energy
Scenario
Recommended Model
PIN
Protection
Standard
Solar tracker (signal)
M08 A-code field
4 PIN
IP67 / IP68
IEC 62852
Solar tracker drive
M12 A-code field
5 PIN
IP67
IEC 62852
Wind pitch
M12 A-code field
8 PIN
IP67 (–40°C)
IEC 61400
Wind nacelle cabinet
M16 field
3+PE / 6+PE
IP67
IEC 61800
Wind tower
M23 field
6 / 12 PIN
IP67
IEC 61400-25
Storage BMS acquisition
M08 A-code field
4 PIN
IP68
UL 9540
Storage PCS comms
M12 A-code field
5 PIN
IP67
IEC 62619
Storage PACK power
M12 T-code field
4 PIN
IP67
IEC 61076-2-111
Core Technologies: IP68 / 1500V DC / IEC 62852
IP68 Outdoor Weatherproofing
Outdoor conditions demand connectors that stay sealed after immersion at 1 m depth for over 30 minutes. Through dual O-ring and lock-nut design, Kronz upgrades its M8 / M12 field-installable connectors to IP68, suitable for coastal PV arrays, offshore wind, and storage-container condensation.
1500V DC High-Voltage
Next-generation PV systems are migrating from 1000V to 1500V DC, cutting line losses by 30–40%. To handle this, Kronz increases creepage margins, improves the Comparative Tracking Index (CTI), and uses PBT+LCP hybrid housings — making the M12 family fully qualified for 1500V DC applications.
IEC 62852 PV Standard
IEC 62852 is the dedicated safety standard for PV systems. The Kronz M12 PV-specific series provides IP68 protection, IP2X finger-safe contact prevention, and a dual-locking DLC structure — a fully interoperable alternative to the de facto MC4 / MC4-Evo form factor.
Field Cases
Qinghai Golmud 200MW PV Plant — Kronz M12 A-code 5 PIN field connectors deployed in 8,000+ solar trackers, stable operation for 5 years.
Shandong Offshore Wind Farm — Kronz M16 field connectors integrated with 3.6MW turbine pitch systems, DNV-certified.
Q1. Why do solar, wind, and storage applications require specialized connectors?
A. Long-term UV, ozone, acid rain, salt spray, and thermal-shock resistance; 1500V DC and high-current handling; and compliance with IEC 62852, IEC 61400, UL 1973, and similar standards make general-purpose connectors inadequate.
Q2. What is the difference between IP67 and IP68?
A. IP67 protects against temporary immersion (1 m for 30 minutes). IP68 supports continuous immersion under manufacturer-defined conditions and is required for coastal PV, offshore wind, and storage-container environments.
Q3. Why is 1500V DC becoming the new PV standard?
A. 1500V DC reduces line losses by 30–40%, enabling longer string lengths and lower BOS cost. They require greater creepage, higher CTI, and PBT+LCP hybrid housings.
Q4. What is the M12 T-code connector used in storage?
A. T-code is defined by IEC 61076-2-111 for power and charging applications. Kronz M12 T-code 4 PIN is rated 63V DC / 12A, ideal for PACK power and BMS signal loops.
Conclusion & Contact
From PV arrays to combiner boxes, from wind hubs to storage PACKs, the connector is no longer a passive component — it is the first line of reliability in the new-energy system. Kronz is committed to providing stable, fast, and reliable connection solutions across the entire M8 / M12 / M16 / M23 portfolio for solar, wind, and storage customers.
Selecting or evaluating a new-energy connector? Talk to a Kronz application engineer today.
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