1SFL527262R1222 ABB AF205B-40-22RT-12 48–130 V AC/DC 4-Pole Contactor

Why Choose the ABB AF205B-40-22RT-12 48–130 V Contactor?

The ABB AF205B-40-22RT-12 is a heavy-duty 4-pole contactor from the ABB AF Large range, engineered for demanding industrial and railway power-switching applications. Identified by ABB order code 1SFL527262R1222, this exact model combines four normally open main poles with pre-mounted auxiliary contacts and secure ring tongue terminal connections.

ABB AF electronic coil technology gives the AF205B-40-22RT-12 a wide 48–130 V AC 50/60 Hz and 48–130 V DC control-voltage range. This broad operating range helps the contactor tolerate control-supply variations, while integrated surge suppression reduces switching transients and eliminates the need for a separate external coil suppressor in many applications.

For power switching, the AF205B-40-22RT-12 provides an IEC AC-1 operational current of up to 350 A at 690 V and 40 °C and a UL/CSA general-use rating of 250 A at 600 V AC. The AF205B platform is also capable of controlling motors up to 110 kW at 400 V AC, providing substantial switching capacity for demanding machinery, transportation and power-control systems.

Key Advantages

• Heavy-duty 4-pole contactor with four normally open main contacts.
• Wide-range 48–130 V AC 50/60 Hz and DC electronic coil.
• Power-circuit switching up to 350 A AC-1 at 690 V and 40 °C.
• 250 A UL/CSA general-use rating at 600 V AC.
• AF205B platform supports motors up to 110 kW at 400 V AC.
• Pre-mounted 2 NO + 2 NC auxiliary contacts.
• Ring tongue terminals provide secure connections for demanding environments.
• Built-in surge suppression simplifies control-circuit design.

Key Features

• ABB AF Large contactor.
• 4 NO main pole configuration.
• 2 NO + 2 NC pre-mounted auxiliary contacts.
• 48–130 V AC 50/60 Hz / 48–130 V DC control voltage.
• Electronically controlled ABB AF coil technology.
• 350 A AC-1 operational current at 690 V and 40 °C.
• 275 A AC-1 operational current at 1000 V and 40 °C.
• 250 A UL/CSA general-use rating at 600 V AC.
• Main-circuit operational voltage up to 1000 V IEC.
• Ring tongue ferrule connections.
• Integrated electronic surge suppression.
• 5 million-cycle mechanical durability.

Reliable Four-Pole Power Switching

The ABB AF205B-40-22RT-12 provides simultaneous switching of four power conductors, making it suitable for applications where a neutral or additional conductor must be switched alongside the three-phase supply. Its 4 NO main-pole arrangement is particularly useful in power distribution, isolation, bypass and transportation electrical systems requiring coordinated four-pole operation.

The combination of ABB AF electronic coil technology, secure ring tongue connections and pre-mounted auxiliary contacts provides a compact solution for demanding installations. Its wide 48–130 V AC/DC control range accommodates substantial supply variation, while the contactor's high AC-1 capacity supports heavy industrial and railway power circuits.

Typical Applications

• Railway and rolling-stock electrical systems.
• Four-pole industrial power switching.
• Power distribution and isolation circuits.
• Bypass and transfer switching systems.
• Industrial machinery and automation equipment.
• High-current control panels and switchboards.
• Applications requiring secure ring tongue connections.