ABB OS630D03 Fuse Switch Disconnector 630A 3-Pole

ABB OS630D03 is a high-performance fuse switch disconnector designed for heavy-duty industrial applications requiring reliable circuit isolation and short-circuit protection. Part of ABB’s renowned OS series, this 3-pole switch disconnector is rated for 630A continuous current and complies with IEC 60947-3 standards, making it suitable for distribution panels, motor control centers, and main switchgear applications worldwide .

Manufactured in Finland, the OS630D03 features a robust, enclosed design with DIN rail or base mounting options, providing flexibility for new installations and retrofit projects .

Key Features & Benefits

High Current Rating: 630A rated operational current at up to 690V AC, suitable for high-power circuits .

DIN Fuse System: Accepts NH2/NH3 fuse sizes, offering standardized and widely available fuse protection .

Front Operated Mechanism: Includes an IP65-rated black ON/OFF handle with an adjustable shaft (280mm length, 12mm diameter) for safe external operation and panel-mounting flexibility .

High Short-Circuit Withstand: Rated short-time withstand current (Icw) of 18 kA for 1 second at 690V, with breaking capacity up to 80 kA depending on fuse selection .

Safety & Compliance: Meets IEC 60947-3, UL/CSA standards. The handle is lockable in the OFF position for lockout/tagout (LOTO) safety procedures .

Durable Construction: Lug-type terminals with 50–75 N·m tightening torque ensure secure, low-resistance connections. IP20 fuse carrier protection; IP65 front panel protection when properly enclosed .

Technical Specifications

Parameter Value

Manufacturer ABB

Model OS630D03

Part Number 1SCA022825R2830 (OS630D03P) / 1SCA114729R1001

Product Type Fuse Switch Disconnector

Number of Poles 3

Rated Operational Current (Ie) 630A (at 690V AC)

Rated Operational Voltage (Ue) 690V AC

Rated Insulation Voltage (Ui) 1000V

Rated Impulse Withstand Voltage (Uimp) 12 kV

Fuse System DIN (NH2 / NH3 fuse sizes)

Fuse Current Rating Up to 800A

Mounting Type DIN Rail or Base (Panel) Mounting

Terminal Type Lug

Tightening Torque 50–75 N·m

Power Loss per Pole 46 W (at rated conditions)

Product Net Weight ~13.6 kg

Enclosure Protection IP20 (fuse carrier) / IP65 (front panel with handle)

Standards IEC 60947-3, EN 60947-3

Country of Origin Finland

Operating Temperature -25°C to +70°C

Specifications may vary by configuration. Always refer to the product datasheet.

Ordering Information & Variants

ABB offers the OS630D series in multiple configurations to suit different application needs:

Order Code Description

OS630D03P 3-pole, front operated, handle and shaft included, IP65 black handle 

OS630D03-3 3-pole variant with NH3 fuse compatibility, base mounting 

OS630D03N3P 4-pole (3+N) with detachable neutral link integrated 

Optional accessories include auxiliary contacts, extended operating shafts (360mm / 430mm), and alternative handle colors .

Applications

The ABB OS630D03 is ideal for:

Main switchgear and distribution boards

Motor control centers (MCCs)

Industrial machinery and production lines

HVAC systems in large commercial buildings

Power supply isolation in renewable energy installations (e.g., solar inverters, wind turbines)