Assembly/Installation
The devices are prepared for DIN rail mounting, for mounting on a 60 mm busbar or for
mounting on a base plate.
Table 3-3 Mounting options
Starter combination Direct-on-line starter Reversing starter
Size S00 S0 S2 S3 S00 S0 S2 S3
Mounting on a standard rail
Snap-on mounting with‐
out adapter
✓
1)
✓
1)
✓
2)
— ✓
1)
— ✓
2)
—
With DIN rail adapter ✓
3)
✓
3)
✓
2)
✓
2)
✓
3)
✓
3)
✓
2)
✓
2)
Mounting on 8US busbar
With 8US busbar adapter ✓ ✓ ✓ — ✓ ✓ ✓ —
Mounting on base plate
Direct ✓ ✓ ✓ — ✓ ✓ ✓ —
With DIN rail adapter ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
1)
Mounting on 1 DIN rail
2)
Mounting on 2 DIN rails
3)
Mounting on 1 or 2 DIN rails
3.2.1 Pre-assembled complete devices
Pre-assembled complete devices
3RA2 fuseless load feeders are pre-assembled complete devices; they are delivered ready-wired
and with all mechanical connections established. The devices are available in sizes S00, S0 and
S2 for direct-on-line start. Pre-assembled complete devices in size S00 and S0 are available for
reversing start. The fuseless load feeders can be ordered with or without pre-assembled busbar
adapters for mounting on a DIN rail or busbar.
Product description
3.2 Device versions
SIRIUS 3RA Load Feeders
Equipment Manual, 02/2022, A5E03656507520A/RS-AC/004 17
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