Type A minimum (pulsating DC); type B for EV chargers and inverters (531.2).

Is an SPD needed in a house?

Yes: type 2 in the main panel, type 1 with lightning protection, type 3 for sensitive electronics (534.4).

IEC 60364-5-53 Switchgear and surge protection — translation

Clause-by-clause translation of IEC 60364-5-53: RCD installation (531), SPDs (534), isolation (536).

🇷🇺 PUE — Rules for Electrical Installations (7th ed.)🕰️ PUE-6 — Rules for Electrical Installations (6th ed., 1985)🇺🇸 NEC — National Electrical Code (NFPA 70)🇪🇺 IEC 60364 / HD 60364 (EU national codes)🌎 NOM-001-SEDE, NBR 5410, AEA 90364, RETIE, NCh 4, CNE 🇨🇳 GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364)🇮🇳 IS 732

Document

Document	IEC 60364-5-53 Switchgear and surge protection
Edition	2020
Status	Current (IEC 60364-5-53:2020)
Issued by	IEC
Applies to	Switchgear, surge protection (SPD), RCDs, selectivity

Document structure

№	Chapter / section
530	General
531	RCDs and their installation
534	SPDs — surge protection devices
536	Isolation, switching

IEC 60364-4-41 Protection against electric shock IEC 60364-5-52 Wiring systems IEC 60364-5-53 Switchgear and surge protection IEC 60364-7-701 Rooms with baths and showers IEC 60364-4-43 Overcurrent protection IEC 60364-6 Verification of installations IEC 62305 Lightning protection (parts 1–4)IEC 60364-7-710 Medical locations IEC 60364-5-54 Earthing and protective conductors IEC 60364-7-702 Pools and fountains BS 7671 UK Wiring Regulations AS/NZS 3000 Wiring Rules (Australia/NZ)

RCDs (531)

531.2 Type selection: AC / A / F / B by load; type A minimum for modern appliances.

531.3 RCDs for socket circuits (30 mA per 4-41), portable equipment, TT mandatory.

531.4 Fire-protection RCDs 300 mA at the intake (mandatory in some EU states).

SPDs (534)

534.4 Type 1 (10/350 µs) at the intake with lightning protection; type 2 (8/20 µs) in the main panel; type 3 near sensitive equipment. Coordination between stages.

Isolation (536)

536.1–536.3 Isolating devices at every intake; visible contacts; marked positions.

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Data is for reference. Final design decisions must follow current regulations and a qualified engineer.
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