ABB 1SDA060256R1 T6L 630 PR221DS-LS/I Circuit Breaker

Key Features

• 630 A Rated Current – Suitable for high-power distribution circuits and feeder protection

• PR221DS-LS/I Electronic Trip Unit – Solid-state release with adjustable L, S, and I protection functions

• Adjustable Overload Protection (L) – I₁ = 0.40 to 1 × In (252–630 A) with 16 DIP switch settings

• Adjustable Short-Circuit Protection (S/I) – S function: 1–10 × In with time delay; I function: 1–10 × In instantaneous

• High Breaking Capacity – 100 kA at 400 V AC (Icu)

• Fixed Front Terminals – Bolt-on connections for secure wiring

• Compact Design – 210 × 268 × 103.5 mm for efficient panel space utilization

• RoHS Compliant – Meets environmental regulations

Technical Parameters

Core Advantages

1. Comprehensive Adjustable Protection

The PR221DS-LS/I trip unit provides three independent protection functions, all field-adjustable via DIP switches on the front of the breaker:

• L (Overload) – Long inverse time delay protection with 16 settings from 0.40 to 1 × In

• S (Short-Circuit Time Delay) – Inverse short time delay protection, 15 settings from 1 to 10 × In, with selectable time curve (0.1 s or 0.25 s)

• I (Instantaneous) – Instantaneous short-circuit protection, 15 settings from 1 to 10 × In, with disable option

This adjustability enables precise coordination with upstream and downstream protective devices, minimizing unnecessary trips while ensuring selective protection.

2. High Breaking Capacity for Demanding Systems

With an Icu of 100 kA at 400 V AC and 200 kA at 220 V AC, the T6L 630 delivers robust short-circuit protection for high-fault-current installations. This makes it suitable for main distribution boards, large motor control centers, and industrial power systems where available fault current is substantial.

3. Solid-State Reliability

The PR221DS-LS/I uses solid-state (electronic) trip technology, eliminating the mechanical wear and calibration drift associated with thermal-magnetic trip units. This ensures consistent, repeatable protection over the life of the breaker and enables the wide adjustment ranges and precise time-current curves required for complex coordination schemes.

4. Neutral Protection Flexibility

For 3-pole applications, the PR221DS trip unit provides a single adjustment for phases and neutral. The neutral protection threshold can be set to OFF, 50%, or 100% of the phase threshold directly from the front of the trip unit via DIP switch.

5. Proven Tmax T Platform

The SACE Tmax T series is ABB's flagship moulded case circuit breaker platform, widely deployed in industrial, commercial, and infrastructure applications worldwide. The T6 frame is designed for medium to high-power distribution, with comprehensive accessories and mounting options available.

Applications

The ABB 1SDA060256R1 is deployed across a wide range of power distribution and protection applications:

Recommended Models & Related Products

Note: The PR221DS-LS/I trip unit offers electronic L/S/I protection. The TMA variants use thermal-magnetic protection. Select based on your coordination and protection requirements.

What's Included

• 1 × ABB 1SDA060256R1 T6L 630 PR221DS-LS/I Circuit Breaker (3P, 630 A, Fixed Front Terminals)

Note: Auxiliary contacts, shunt releases, motor operators, and mounting accessories are sold separately.

Why Buy From Us?

• New and Original – Genuine ABB product

• In Stock – Ready to ship same/next business day

• Fully Tested – Each unit verified for functionality

• Warranty Included – 2-year standard warranty available

• Technical Support – Breaker coordination and application assistance available

Frequently Asked Questions (FAQ)

Q1: What is the ABB 1SDA060256R1?

It is a Tmax T6L 630 moulded case circuit breaker with a PR221DS-LS/I electronic trip unit, rated at 630 A, 3 poles, with fixed front terminals. It provides adjustable L, S, and I protection for power distribution circuits up to 690 V AC.

Q2: What does the model code T6L 630 PR221DS-LS/I mean?

T6L = Tmax T6 frame, L breaking capacity; 630 = 630 A rated current; PR221DS-LS/I = Electronic trip unit with L (overload), S (short-circuit time delay), and I (instantaneous) protection; 3p = 3 poles; F F = Fixed front terminals.

Q3: What are the protection functions of the PR221DS-LS/I?

The trip unit provides L (overload) protection with long inverse time delay, S (short-circuit) protection with inverse short time delay, and I (instantaneous short-circuit) protection. The S and I functions are selectable via DIP switch — you can enable either S or I for short-circuit protection.

Q4: How is the overload protection adjusted?

The L function is adjusted via DIP switches on the front of the trip unit. The threshold ranges from 0.40 to 1 × In (252–630 A) in 16 steps of 0.04 × In. The trip curve is inverse time according to IEC 60947-2.

Q5: What is the short-circuit breaking capacity?

The Icu is 100 kA at 380/400/415 V AC, 200 kA at 220 V AC, and 30 kA at 690 V AC. The Ics (service breaking capacity) is 75 kA at 400 V AC.

Q6: What voltage rating does this breaker have?

This variant is rated for 690 V AC operational voltage, with insulation voltage of 1000 V and impulse withstand of 8 kV. For 1000 V AC applications, the 1SDA060319R1 variant is required.

Q7: What are the dimensions and weight?

The breaker measures 210 × 268 × 103.5 mm and weighs approximately 9.5 kg.

Q8: What is the electrical and mechanical durability?

Electrical durability is 7000 cycles at 60 cycles/hour. Mechanical durability is 20,000 cycles at 120 cycles/hour.

Q9: Can the neutral protection be adjusted?

Yes. For the PR221DS trip unit, the neutral protection threshold can be set to OFF, 50%, or 100% of the phase threshold via DIP switch on the front of the trip unit.

Q10: Is this a genuine ABB product?

Yes. This is a new and original ABB product with catalog number 1SDA060256R1 and EAN 8015644627188.

Q11: What is the country of origin?

Italy (IT).

Q12: What accessories are available for this breaker?

Common accessories include auxiliary contacts (AUX), shunt opening release (YO), shunt closing release (YC), undervoltage release (YU), and motor operators for remote operation. These are sold separately.