South Korea RRA 5G NR Technical Standards Update: KC Certification Changes and Compliance Timeline

South Korea's National Radio Research Agency (RRA), operating under the Ministry of Science and ICT (MSIT), has issued a significant series of South Korea RRA 5G NR technical standards updates spanning 2024 through 2026. Covering KC certification procedures, SAR evaluation methods, EMC test standards, device security requirements, and 5G Standalone (SA) infrastructure mandates, these changes collectively redefine what manufacturers must demonstrate to maintain legal market access in South Korea. Key enforcement dates begin April 1, 2026 and extend through November 2026.

Overview: South Korea's Regulatory Framework for 5G NR Certification

South Korea applies one of the world's most rigorous type-approval regimes for radio and telecommunications equipment. All wireless products including 5G NR devices must obtain certification from the National Radio Research Agency (RRA) before they can be legally imported, distributed, or sold in South Korea. Approval is confirmed through the KC (Korea Certification) mark, which demonstrates compliance with national spectrum regulations, radio performance requirements, and EMC rules under the Radio Waves Act.

The South Korea RRA 5G NR technical standards framework is governed by Article 58-2 of the Radio Waves Act and administered through three certification pathways:

•        Certification of Conformity: Mandatory for equipment that could harm the radio environment or disrupt broadcasting and communication networks — this includes most 5G NR devices.

•        Registration of Compliance: For lower-risk broadcast and communication equipment not subject to the Certification of Conformity pathway.

•        Supplier's Declaration of Conformity (SDoC): Applied to specific categories such as certain USB-C compliant devices from 2026 onward.

A critical requirement across all pathways: foreign test reports (FCC, CE) are not accepted. All South Korea RRA 5G NR technical standards testing must be performed by an RRA-accredited laboratory located in-country, and a local Korean representative is mandatory for all KC certification applications.

Full Regulatory Timeline: South Korea RRA 5G NR Technical Standards Updates (2024–2026)

The table below consolidates every key South Korea RRA 5G NR technical standards milestone from mid-2024 through the final 2026 enforcement deadlines:

Date	Milestone
August 23, 2024	RRA Circular No. 2024-71 published — public consultation on SAR evaluation procedures for wireless devices
November 8, 2024	MSIT announces technical standards for USB-C charging/data transmission (WTO notification)
February 14, 2025	USB-C technical standards enter into force; 5G NR device compliance framework updated
April 25, 2025	RRA formally revises technical standards — LEO satellite stations added; 5G NR device scope clarified
June 5, 2025	RRA Announcement No. 2025-41 — partial revision of EMC test methods
June 25, 2025	RRA Announcement No. 2025-44 — public comment on SAR standard revision (KS C3350)
July 27, 2025	RRA Notice No. 2025-50 — EMC standards and KS test methods updated (effective August 2025)
August 20, 2025	RRA public consultation on revised security standards for terminal devices (IP cameras)
December 15, 2025	MSIT mandates 5G SA core by 2026; 5G NR network infrastructure requirements tightened
December 22, 2025	RRA finalizes revised Technical Standards for Aeronautical Radio Equipment (AeroMACS)
December 31, 2025	RRA Notification No. 2025-22 — partial revision of EMC standards (PSD sensor malfunction fix)
February 10, 2026	MSIT Announcement No. 2026-9 — license-exempt radio equipment technical standards revised
February 20, 2026	Revised security standards for terminal devices (IP cameras) enter into force
April 1, 2026	SAR standard revision (KS C3350) enters into force; transitional measures apply
November 6, 2026	USB Type-C interface mandatory for 13 categories of mobile/smart devices

Key Technical Changes Affecting South Korea RRA 5G NR Certification

The 2024–2026 update cycle introduces changes across four critical compliance domains. Manufacturers pursuing South Korea RRA 5G NR technical standards approval must understand all four before engaging a test laboratory.

1. SAR Standard Revision — KS C3350 (Effective April 1, 2026)

The RRA's SAR framework has been substantially modernized under Announcement No. 2025-44, with mandatory implementation from April 1, 2026. These changes are critical for any 5G NR device designed for use close to the human body:

•        Pre-test power declaration: Manufacturers must declare the maximum transmit power and production tolerance before testing begins — applicable to every wireless mode, including 5G NR, LTE, Wi-Fi 6/7, and Bluetooth.

•        Updated test methods: Specific simulated human body, probe calibration method, and power drift correction now required.

•        Testing distance: Must not exceed 5 mm; if a different distance is intended, the manufacturer must notify the laboratory in advance with a written justification.

•        Transitional provisions: Products tested before April 1, 2026 under the previous SAR standard are subject to transitional measures and remain valid during the transition window.

2. EMC Standards Update — Notice No. 2025-50 (Effective August 2025)

On July 27, 2025, the RRA published Notice No. 2025-50, announcing broad updates to EMC standards and testing methods under the conformity assessment framework for broadcasting and communication equipment. These changes reflect a nuanced recalibration of South Korea RRA 5G NR technical standards:

•        Newer Korean Industrial Standards (KS) were adopted for several product categories.

•        Older KS standard versions were reinstated for specific product classes — reflecting a deliberate policy to maintain technical control and ensure compatibility across equipment classes.

•        Low-frequency immunity tests and EMC testing for industrial program controllers, protective relays, and related equipment are updated.

•        Manufacturers relying on now-replaced standards must assess whether recertification is required for existing KC approvals.

3. Device Security Requirements — Terminal Device Revision (Effective February 20, 2026)

The RRA's August 2025 public consultation on Terminal Device Security Standards has resulted in revised requirements that entered into force on February 20, 2026. Though initially targeting IP cameras, the principles extend to all 5G NR-connected terminal devices:

•        Default credential prohibition: Devices must no longer ship with default passwords or usernames. Each device must use unique credentials at factory stage.

•        Mandatory firmware update mechanism: Devices must support a secure, authenticated firmware update process.

•        Alternative authentication methods: Cloud service devices must support key/token-based authentication in compliance with national standard KS X 3078.

4. 5G Standalone (SA) Core Infrastructure Mandate (2026)

South Korea's MSIT has issued a binding mandate requiring all 5G base stations to connect to 5G Standalone (SA) core equipment by end of 2026. This directly affects the South Korea RRA 5G NR technical standards applicable to infrastructure products:

•        SK Telecom and LG U+, which currently operate 5G NSA (Non-Standalone) networks controlled by a 4G core, must transition to SA architecture.

•        Only KT has already migrated to 5G SA as of June 2021.

•        Non-compliance consequences: MSIT has stated that failure to implement will result in administrative corrective orders.

•        5G SA is a prerequisite for 5G-Advanced and future 6G migration planning.

What This Means for Manufacturers Seeking South Korea RRA 5G NR Certification

The cumulative effect of the 2024–2026 South Korea RRA 5G NR technical standards update cycle is a substantially more demanding certification environment. Manufacturers must navigate simultaneous changes across RF, EMC, SAR, security, and infrastructure compliance — all with firm enforcement deadlines.

Market Access Risk

Devices that do not comply with the updated South Korea RRA 5G NR technical standards cannot receive KC certification — and cannot be legally imported or sold in South Korea. With multiple standards transitioning simultaneously in 2026, manufacturers who delay compliance reviews face compounding risk of market access disruption.

Recertification Obligations

Existing KC approvals are not automatically valid under the revised South Korea RRA 5G NR technical standards. Manufacturers must assess whether their current certifications cover the updated EMC, SAR, and security requirements. Certificates must be updated whenever the product or the applicable regulations change.

Design and Testing Lead Times

Given that South Korea RRA 5G NR certification requires in-country testing, the appointment of a Korean representative, Korean-language documentation, and product samples, lead times are typically 8–16 weeks from test submission to KC approval. Manufacturers must factor this into product launch planning, particularly against the April 1, 2026 and November 6, 2026 enforcement dates.

South Korea RRA 5G NR Certification Impact Summary

The table below provides a structured overview of how the South Korea RRA 5G NR technical standards update affects key compliance areas, with specific required actions:

Area	Impact	Action Required
KC RF Certification	5G NR devices require new or updated KC RF approval under revised RRA technical standards	Prepare fresh technical files and test plans
EMC Compliance	Updated KS standards under Notice No. 2025-50 apply — some older standards reinstated for specific categories	Verify which KS version applies to your product class
SAR Testing	KS C3350 mandatory from April 1, 2026; new test distance, probe calibration, and power declaration rules	Declare max transmit power per wireless mode before testing
5G SA Infrastructure	5G NR base stations must connect to 5G Standalone (SA) core by end of 2026	Assess network architecture compliance for infrastructure products
Device Security	Terminal devices (including 5G NR-connected IP cameras) must meet enhanced security standards from Feb 20, 2026	Integrate KS X 3078 authentication requirements in firmware
Local Testing	FCC/CE reports not accepted; in-country testing at RRA-accredited laboratory mandatory for South Korea RRA 5G NR certification	Engage Korean-accredited test lab early in the project
Korean Representative	A local Korean representative is mandatory for all KC certification applications	Appoint or confirm Korean representative before submission

Official Government Sources

All information in this South Korea RRA 5G NR technical standards article is based on the following primary regulatory sources:

•        National Radio Research Agency (RRA): www.rra.go.kr

•        Ministry of Science and ICT (MSIT): www.msit.go.kr

•        RRA Announcement No. 2025-44 — SAR standard public consultation (June 25, 2025)

•        RRA Notice No. 2025-50 — EMC standards and KS test methods revision (July 27, 2025)

•        RRA Terminal Device Security Revision — public consultation (August 20, 2025)

•        MSIT Announcement No. 2026-9 — license-exempt radio equipment technical standards revision (February 10, 2026)

•        RRA Notification No. 2025-22 — EMC standards partial revision (December 31, 2025)

•        RRA Annex I (NIST version, August 11, 2025) — applicable KS standards for MRA recognition

•        MSIT 2024-2027 Republic of Korea Spectrum Plan (September 1, 2024)