Product Overview
SACE FORMULA DSA is a range of low voltage molded-case circuit breakers developed by ABB SACE for power distribution and motor protection applications. The range is designed to combine simplicity, reliability, quality, and versatility in a single product family.
The SACE FORMULA DSA family consists of four frames: A0, A1, A2, and A3, covering rated currents from 15 A to 630 A. The breakers are available in fixed versions with front terminals and are designed for quick selection, easy installation, and immediate use.
With fixed thermal and magnetic threshold values, the trip units simplify commissioning and reduce configuration time. The compact design, reduced product codes, and easy accessory fitting make the range especially suitable for OEMs, panel builders, and installers.
Product Features
Simple Selection and Ordering
The SACE FORMULA DSA range is designed with fewer but essential versions, simplifying product selection and ordering.
Key benefits include:
· Reduced number of product codes
· Fixed trip thresholds
· Easy sizing
· Quick ordering process
· Ready-to-use installation
Wide Application Versatility
The product family supports multiple polarities and different application requirements.
Available configurations include:
· 1-pole versions
· 2-pole versions
· 3-pole versions
· 4-pole versions
The breakers can be used for:
· Power distribution
· Motor protection
· Alternating current networks
· Direct current applications
· Emergency lights
· Elevators
· Fans, pumps, and vacuum systems
Compact Design
SACE FORMULA DSA breakers are designed with reduced depths to save space inside switchboards and panels.
Only two main depths are used:
· 60 mm for A0, A1, and A2
· 103.5 mm for A3
This compact design increases available working space and simplifies panel construction.
Easy Installation
The range offers flexible installation options and simplified assembly.
Installation methods include:
· Direct mounting on the back plate of cubicles
· DIN rail mounting for A0, A1, and A2
· Back door mounting for A0, A1, A2, and A3
The circuit breakers can be mounted horizontally, vertically, or lying down without derating of rated characteristics.
High Operating Reliability
SACE FORMULA DSA circuit breakers are built with important construction features such as:
· Double insulation
· Positive operation
· Isolation behavior
· Electromagnetic compatibility
· Tropicalization
· Reverse feedable power supply
Suitable for 50°C Operation
Selected SACE FORMULA DSA breakers are suitable for use at 50°C without derating under normal conditions.
Applicable versions include:
· A0, A1, and A2 up to 250 A, except A1 125 A
· A3 300 A and 400 A special 50°C versions
Complete Accessory Range
The range includes mechanical and electrical accessories that can be field installed by customers.
Accessory types include:
· Connection terminals
· Terminal covers
· Phase separators
· Rotary handles
· Padlocks and key locks
· DIN rail brackets
· Shunt opening releases
· Undervoltage releases
· Auxiliary contacts
· Early auxiliary contacts
· FORMULA Link distribution system
Product Authenticity and Compliance
Each breaker includes a hologram on the front, produced with anti-forgery techniques to ensure product quality and authenticity as an ABB SACE product.
Main Functions
Power Distribution Protection
SACE FORMULA DSA breakers provide protection for low voltage distribution networks through thermal-magnetic or electronic trip units.
Protection functions include:
· Overload protection
· Short-circuit protection
· Isolation
Thermal-Magnetic Protection
The fixed thermal-magnetic trip unit TMF is generally used in power distribution systems.
It provides:
Thermal protection L against overloads
Fixed threshold: I1 = 1 x In
Long inverse time trip curve
Magnetic protection I against short circuits
Fixed threshold: I3 = 10 x In
Instantaneous trip curve
Neutral protection
100% neutral for 4-pole circuit breakers
Electronic Protection
The ELT LI electronic trip unit is available for A3 circuit breakers and provides:
· Overload protection L
· Short-circuit protection I
· Fixed overload threshold: I1 = 630 A
· Fixed short-circuit threshold: I3 = 6000 A
· 100% neutral for 4-pole circuit breakers
Magnetic-Only Protection
The MF and ELT I magnetic-only trip units are used mainly for motor-based applications and selected equipment protection.
Typical applications include:
· Fans
· Water pumps
· Vacuum systems
· Fire protection systems
· Emergency lights
· Elevators
Protection function:
· Magnetic protection I
· Non-adjustable threshold: I3 = 12 x In
· Instantaneous trip curve
Remote Opening and Undervoltage Protection
Electrical service releases support remote or voltage-dependent opening.
Available releases include:
· SOR-C shunt opening release
· UVR-C undervoltage release
SOR-C allows circuit breaker opening by non-permanent electrical control. UVR-C opens the breaker when the supply voltage drops or is missing.
Electrical Signalling
Auxiliary contacts provide electrical information about breaker status.
Available signals include:
· Open / closed position
· Trip indication
· Tripping due to thermal-magnetic or electronic trip unit
· Tripping due to SOR-C or UVR-C
· Test pushbutton activation
Mechanical Operation and Locking
The product range supports mechanical operating accessories for safer and more convenient control.
Functions include:
· Direct rotary handle operation
· Extended rotary handle operation through switchboard door
· Padlocking in open position
· Padlocking in open and closed position
· Key locking
· Lever operating mechanism for A3
FORMULA Link Power Distribution
FORMULA Link is a power distribution system that divides a main power supply over multiple loads.
It consists of:
· Main incoming circuit breaker
· Main busbars
· Outgoing circuit breakers
· Incoming kit connections
· Outgoing kit connections
· Busbar holders
· Phase separators
· Protection accessories
FORMULA Link is made in accordance with IEC 61439.
Specifications
Trip Units
|
Trip Unit |
Available Frames |
Main Protection Functions |
| TMF thermal-magnetic | A0, A1, A2, A3 up to 500 A | Overload L and short-circuit I |
| ELT LI electronic | A3 up to 630 A | Overload L and short-circuit I |
| ELT I electronic magnetic-only | A3 | Short-circuit I |
| MF magnetic-only | A1, A2, A3 | Short-circuit I |
TMF Thermal-Magnetic Trip Unit
|
Item |
Specification |
| Thermal protection | I1 = 1 x In |
| Thermal trip curve | Long inverse time |
| Magnetic protection | I3 = 10 x In |
| Magnetic trip curve | Instantaneous |
| Neutral | 100% for 4-pole circuit breaker |
MF / ELT I Magnetic-Only Trip Unit
|
Item |
Specification |
| Application | Motor-based applications, emergency lights, elevators |
| Magnetic protection | I3 = 12 x In |
| Trip curve | Instantaneous |
| Threshold | Non-adjustable |
Mechanical and Electrical Life
|
Frame |
Mechanical Life |
Electrical Life at 415 V AC |
| A0 | 8,500 operations | 1,500 operations |
| A1 | 8,500 operations | 1,500 operations |
| A2 | 10,000 operations | 4,000 operations |
| A3 | 5,000 operations | 2,000 operations |
Opening Time
|
Release Type |
A0 |
A1 |
A2 |
A3 |
| Shunt opening release SOR | 15 ms | 15 ms | 15 ms | 15 ms |
| Undervoltage release UVR | 15 ms | 15 ms | 15 ms | < 25 ms |
Dimensions
|
Frame |
Poles |
Width x Depth x Height |
| A0 | 3P | 76.2 x 60 x 130 mm |
| A1 | 1P | 25.4 x 60 x 130 mm |
| A1 | 2P | 50.8 x 60 x 130 mm |
| A1 | 3P | 76.2 x 60 x 130 mm |
| A1 | 4P | 101.2 x 60 x 130 mm |
| A2 | 2P | 70 x 60 x 150 mm |
| A2 | 3P | 105 x 60 x 150 mm |
| A2 | 4P | 140 x 60 x 150 mm |
| A3 | 3P | 139.5 x 103.5 x 205 mm |
| A3 | 4P | 186 x 103.5 x 205 mm |
Environmental and Installation Conditions
|
Item |
Specification |
| Installation temperature | -25°C to +70°C |
| Storage temperature | -40°C to +70°C |
| No derating altitude | Up to 2000 m |
| Installation positions | Horizontal, vertical or lying down |
| Utilization category | A |
| Isolation behavior | Yes |
| Reverse feedable | Yes |
| Tropicalization | Yes |
| Electromagnetic compatibility | Yes |
Altitude Derating
|
Altitude |
Rated Service Voltage Ue |
Rated Uninterrupted Current |
| 2000 m | 550 V | 100% |
| 3000 m | 484 V | 98% |
| 4000 m | 429 V | 95% |
| 5000 m | 374 V | 90% |
Degree of Protection
|
Configuration |
Area A |
Area B |
| Circuit breaker with front | IP40 | IP20 |
| Circuit breaker without front | IP20 | IP20 |
| Circuit breaker with RHE / RHD | IP40 | IP20 |
| Circuit breaker with HTC | IP40 | IP40 |
| Circuit breaker with LTC | IP40 | IP30 |
| Circuit breaker with FLD | IP40 | IP20 |
Standards and Compliance
|
Category |
Standard / Directive |
| Product standard | IEC 60947-2 |
| Additional standard | PNS 519:1991 for A1 100 In = 100 A 2P / 3P only |
| Low Voltage Directive | 2014/35/EU |
| EMC Directive | 2014/30/EC |
| Quality system | ISO 9001, EN ISO 9001, UNI EN ISO 9001, IRIS |
| Environmental management | ISO 14001 |
| Occupational health and safety | OHSAS 18001 |
| Social accountability | SA 8000 |
| Material compliance | RoHS II, REACh, WEEE, Conflict Minerals |
Available Accessories
|
Accessory Type |
Items |
| Connection terminals | F, EF, ES, FC CuAl |
| Insulation accessories | High terminal cover, low terminal cover, phase separators, sealable screws |
| Operating mechanisms | Direct rotary handle, extended rotary handle, front for lever operating mechanism |
| Locking devices | Padlocks, key locks |
| Mounting accessories | DIN rail bracket |
| Electrical accessories | SOR-C, UVR-C, AUX-C, AUE-C |
| Distribution system | FORMULA Link |
FORMULA Link Specifications
|
Item |
Specification |
| Function | Power distribution system for dividing the main supply over different loads |
| Standard | IEC 61439 |
| Available frames | 250 A, 400 A, 630 / 800 A |
| Incoming breakers | SACE FORMULA DSA A2, SACE FORMULA DSA A3, SACE Tmax T6 |
| Outgoing breakers | SACE FORMULA DSA A1 and A2 |
| Rated operational voltage | 550 V AC, 50 / 60 Hz |
| Rated insulation voltage | 690 V AC |
| Rated short-time withstand current, 1 s | 30 kA for 250 A frame; 40 kA for 400 A and 630 / 800 A frames |
| Useful lengths | F1 154 mm, F2 230.5 mm, F3 307.5 mm, F4 384 mm, F5 461 mm |
