OSR12 Single pole Electromagnetic compact RCBOs

OSR12 RCBO – The World's Most Compact Electromechanical RCBO in Just 1 Module (18milímetro)

Space-Saving Innovation for Modern Electrical Installations

The OSR12 RCBO revolutionizes circuit protection with its ultra-compact 1-module (18milímetro) design, delivering complete residual current and overcurrent protection in the industry's smallest footprint.

Key Advantages

1. Unmatched Space Efficiency

50% slimmer than standard 2-module RCBOs
Enables more compact distribution boards – reducing material and installation costs
Direct 1:1 replacement for existing 1-pole MCBs – perfect for retrofit projects

2. Enhanced Safety for Any Application

Upgrades protection by adding residual current detection to existing circuits
Maintains full overload and short-circuit protection
Ideal for high-density installations:
- Residential/commercial buildings
- Renovation projects with space constraints
- Multi-circuit installations requiring individual RCBO protection

3. Smart Installation Features

Pin busbar system for:
- Tool-free, quick-connect wiring
- Flexible in-feed at any connection point
- Customizable length (cut-to-fit)
Optimized for narrow distribution boards

4. Comprehensive Accessory Ecosystem
Expand functionality with:

Auxiliary switches
Fault signal contacts
Integrated arc fault detection (AFDD) – creates a complete 2-module protection solution covering:
- Residual currents
- Overloads/short circuits
- Arc faults

Why Choose OSR12 RCBO?

✔ World's most compact electromechanical RCBO
✔ Seamless retrofit – no panel modifications required
✔ Cost-saving – enables smaller, more economical distribution boards
✔ Future-ready – compatible with advanced protection accessories

Technical Compliance: Meets all requirements of IEC 61009-1

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Product Details

Compact 1-Module (18milímetro) Electromagnetic RCBO – Product Overview

Product Introduction

This 1-module (18mm wide) RCBO electromagnético combines residual current protection (RCCB) and overcurrent protection (MCB) in an ultra-slim design, making it ideal for space-constrained installations while ensuring:

Personnel protection (electric shock prevention)
Fire prevention (leakage current detection)
Circuit protection (overload & short-circuit protection)

Características principales

1. Ultra-Slim 18mm Design

Space-saving: Single-pole width of just 18milímetro (1 DIN module), enabling high-density panel layouts.
Electromagnetic tripping mechanism: Faster response and higher durability compared to thermal-magnetic RCBOs.

2. Residual Current Protection (RCCB Function)

Type AC/A:
- AC: Trips on sinusoidal AC residual currents (standard loads).
- Un: Also detects pulsating DC leakage currents (e.g., from VFDs, SMPS, LED drivers).
30mA sensitivity: Complies with direct contact protection requirements (IEC 60364).

3. Overcurrent Protection (MCB Function)

Dual protection:
- Thermal (bimetallic strip): Time-delayed tripping for overloads.
- Electromagnético (solenoid): Instant tripping for short circuits.
Tripping curves:
- Type B (3–5× In): For residential/light commercial loads.
- Type C (5–10× In): For circuits with inrush currents (motors, transformers).

4. Enhanced Reliability

Anti-welding contacts: Special alloy materials withstand high short-circuit currents.
Nuisance trip prevention: Isolated circuit design avoids false tripping from cumulative leakage or switching transients.

Applications

Residential/Commercial: Sockets, lighting, HVAC branch circuits.
Industrial: Control panels, compact switchboards, motor feeders.
Retrofit Projects: Easy replacement of existing 1P MCBs in tight spaces.

Advantages

✔ 18mm width – Saves 50%+ space vs. conventional RCBOs.
✔ Electromagnetic tripping – Faster response, 10,000+ mechanical cycles.
✔ All-in-one protection – Integrates RCCB + MCB functionalities.
✔ Easy installation – DIN rail compatible, direct replacement for 1P breakers.

Standards & Certifications

Complies with IEC 61009-1, EN 61009-1, and IEC 60364.

OSR12 RCBO Technical Specifications

Category	Specification	Details
Standards Compliance	IEC/DIN EN Standards	IEC/DIN EN 61009-1 (VDE 0664-20); IEC/DIN EN 61009-2-1 (VDE 0664-21)
Electrical Characteristics	Rated Voltage (Un)	230V AC
	Rated Currents (In)	2, 4, 6, 10, 13, 16Un，20Un，25Un，32Un
	Rated Residual Current (IΔn)	30mA
	Rated Switching Capacity	4.5Ka, 6Ka
	Energy Limitation Class	3
Protection Features	Current Withstand Capability	Type A (8/20μs waveform per EN 60060-2)
	Minimum Test Voltage	195V AC
Installation Parameters	Terminal Conductor Range	Solid/stranded: 0.75-16mm² Finely stranded (with sleeve): 0.75-10mm²
	Terminal Torque	1.2-2Nm
	Connection Options	Top or bottom
	Mounting Position	Any (standard DIN rail)
Environmental Ratings	Protection Rating	IP20
	Touch Protection	EN 50274 compliant (finger and back-of-hand safe)
	Operating Temperature	-25°C to +45°C
	Storage Temperature	-40°C to +75°C
	Climate Resistance	IEC 60068-2-30 (28 cycles at 55°C, 95% RH)
Reliability	Switching Cycles	>10,000 operations
Materials	Hazardous Substances	CFC and silicone-free