XT3N 250 TMD 250-2500 3p F F MCCB 250A 36kA | ABB

The Original New ABB XT3N 250 TMD 250-2500 3p F F (1SDA068059R1) is a 3‑pole moulded case circuit breaker (MCCB) from the ABB SACE Tmax XT series, designed for reliable overload and short‑circuit protection in industrial and commercial low‑voltage electrical distribution systems. Rated at 250 A with a 690 V AC / 500 V DC operational voltage and a 36 kA breaking capacity at 415 V AC, this fixed‑mounting breaker with front terminals and a TMD thermomagnetic release delivers robust protection for switchboards, machinery panels, distribution boards, and equipment feeders.

Core Engineering Highlights:
250 A rated current | 36 kA breaking capacity at 415 V AC | 690 V AC / 500 V DC rated operational voltage | 800 V rated insulation voltage | 8 kV rated impulse withstand voltage | TMD thermomagnetic release (thermal adjustable 0.7–1×In, magnetic fixed at 2500 A) | 3‑pole fixed configuration with front terminals | 25,000 mechanical operating cycles | IP20 protection | 1.7 kg weight

Key Features:

• Original New ABB 1SDA068059R1 MCCB

• TMD thermomagnetic release — thermal overload protection (adjustable 0.7–1×In) and fixed magnetic short‑circuit protection (2500 A)

• 250 A rated current for medium to large‑scale electrical distribution applications

• 36 kA breaking capacity at 415 V AC for reliable fault current interruption

• 690 V AC / 500 V DC operational voltage for flexible AC and DC network compatibility

• 800 V rated insulation voltage and 8 kV impulse withstand voltage

• Fixed mounting design with front terminals for straightforward panel installation

• Red and green contact position indicators for easy monitoring and diagnostics

• 25,000 mechanical operating cycles for long‑term reliability

• Compact dimensions (150 × 105 × 70 mm) for space‑saving panel layouts

• Lightweight design (approx. 1.7 kg) for easy handling during assembly

• Complies with IEC 60947‑2 and IEC 60947‑3 standards

Applications:

• Industrial switchboards and power distribution systems

• Machinery control panels and equipment feeders

• Commercial building electrical distribution

• Process and packaging plants

• Transmission systems and building sites

• Photovoltaic installations (DC side up to 500 V DC)

Technical Specifications:

System Compatibility:

• Compatible with ABB SACE Tmax XT series accessories including auxiliary contacts, shunt trips, undervoltage releases, and motor operators

• Suitable for use with ABB switchboards and distribution panels

• Can be combined with ABB busbar systems and mounting kits

• Complies with IEC 60947‑2 for circuit breaker applications and IEC 60947‑3 for switch‑disconnector applications

Related Products:

• 1SDA068053R1 – XT3N 250 TMD 250-2500 3p FF (similar, different accessory configuration)

• 1SDA068070R1 – XT3N 250 TMD 250-2500 4p FF (4‑pole version)

• SACE Tmax XT accessories – Auxiliary contacts, shunt trips, undervoltage releases

• Motor operator – For remote open/close control

• Mounting kit – For panel or DIN rail installation

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. ABB, SACE, and Tmax are trademarks of ABB Group.