SAJ ATS1-S63-A (single-phase automatic transfer switch, 63 A)
Description
Automated whole-home emergency power transfer across all 3 phases.
SAJ ATS1-T63-A is a 63 A three-phase automatic transfer switch panel delivering sub-10 ms grid isolation and whole-facility emergency power for SAJ HS2, H2, and EK90 three-phase hybrid installations.
63 A Three-Phase Continuous Capacity (43.5 kVA)
Handles full European residential and commercial service entrances up to 63 A per phase.
Sub-10 ms Seamless Emergency Power
Automatically keeps three-phase heating, cooktops, and IT electronics powered during utility outages.
Zero Utility Back-Feeding
Utility-grade mechanical interlocking contactors eliminate dangerous reverse-power flow during grid line repairs.
IP65 Heavy Weatherproof Enclosure
Weather-sealed casing certified for outdoor installation beside main utility service meters (-25 to +60 °C).
More product details
When the utility grid fails, domestic electronics, heat pumps, and induction cooktops shut down immediately. The ATS1-T63-A senses voltage dropouts instantly, opening motorized grid contactors and commanding the inverter to establish an off-grid microgrid.
- Motorized interlocked contactors achieve full physical galvanic isolation within <10 ms of grid drop.
- Eliminates micro-interruptions on critical home electronics, routers, and heat pump controls.
- Direct communication interface coordinates safety tripping with SAJ three-phase inverters.
SAJ
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2 models
Ingress protection
IP54
IP54
Operating temperature
-25 to +50 °C
-25 to +50 °C
Weight
15.8 kg
15.8 kg
Heavy-duty switchgear engineered for harsh electrical environments.
Carrying up to 63 A per phase under continuous domestic load, the switch features heavy internal busbars, motorized disconnect mechanisms, and an IP65 outdoor enclosure. Sized to carry full three-phase main service currents up to 63 A continuously. Heavy-duty terminal blocks accommodate large copper conductors up to 16 mm² / 25 mm². IP65 weatherproof casing installs cleanly indoors in switchrooms or outdoors beside main utility meters (-25 to +60 °C).
63 A inverter input.
T63 sizes the inverter port at 63 A for the three-phase list, not the 32 A single-phase S63 port.
Lists the H2 T3 15-30K line.
This is the ATS cabinet that names H2-15/20/25/30K-T3 and HS3 three-phase - the S63 sheet does not.
Technical data
The dedicated automatic transfer switch panel engineered for SAJ three-phase hybrid systems.
63 A three-phase automatic transfer switch for whole-home emergency power.
Designed exclusively for SAJ three-phase hybrid inverters (HS2, H2, and EK90 series), the ATS1-T63-A enables automated whole-home and small commercial backup power. Handling up to 63 A continuous grid current per phase (43.5 kVA total), its motorized contactors provide rapid sub-cycle isolation during utility blackouts, keeping three-phase domestic circuits live without human intervention.
- Main Grid Capacity
- 63 A / Phase
- Maximum Apparent Power
- 43.5 kVA
- Sub-Cycle Transfer
- < 10 ms
- Outdoor Enclosure
- IP65
Ratings
- Max current
- 63 A
- Phase
- 3
- Switch ms
- 50
Physical
- IP rating
- IP54
- Dimensions
- 520x518x142
- Weight
- 15.8 kg
Verified switching & enclosure data
- Grid connection
- Three-phase, 380 / 400 / 415 V
- Rated current
- 63 A
- Grid frequency
- 50 / 60 Hz
- Switching time
- 50 ms
- Ingress protection
- IP54
- Operating temperature
- -25 to +50 °C
- Applicable standard
- IEC / EN 61439
Project fit
Where this model fits.
Scenarios that show which projects the SAJ ATS1-T63-A belongs in, what to verify before quoting, and when another model is the better pick.
Project scenario
Whole-Home Three-Phase Backup for SAJ HS2, H2 & EK90 Inverters
Three-phase homes deploying SAJ hybrid inverters where automated whole-home backup power is required across all 3 phases.
Allows passing full 63 A utility current through the switch while providing automatic sub-10 ms backup transition.
What Linker confirms with you
- Confirm this model against the adjacent rating in the same family
Documents
SAJ ATS1 datasheet (ES)Product questions
What is the maximum continuous current supported on the three-phase ATS box?
Full 63 A continuous per phase on both Grid and Inverter ports. Both the Grid connection and the Inverter backup ports are rated for 63 A continuous current per line (3L+N+PE @ 400 V), supporting total apparent throughput up to 43.5 kVA.
