Westell NPTPA1105 — dual-bus 160 A DC fuse panel with 4 TPA and 6 GMT fuse positions per bus and rear access to terminals, for 19 in. or 23 in. equipment racks.
The NPTPA1105 provides fused distribution of DC power to site equipment at wireless sites, central offices, co-location facilities and remote sites. Each fuse position is monitored and the panel extends an alarm when a fuse interrupts the current, with normal and alarm LEDs for bus A and bus B and Form C relay contacts for each bus.
Specifications
| Model |
NPTPA1105 |
| Input voltage |
+/-24 or +/-48 VDC typical; +/-22 to +/-56 VDC max |
| Buses |
2 per panel, 160 A max per bus input |
| Outputs per bus |
4 TPA (50 A max fuse) and 6 GMT (20 A max fuse) |
| Input block |
Two 1/4 in. studs on 5/8 in. centers; max standard lug 1 AWG |
| GMT output wiring |
22 to 12 AWG wire, or fork/ring for #6 screw |
| TPA output wiring |
20 to 10 AWG wire; 6 and 8 AWG with narrow tongue #6 screw |
| Rack mounting |
19 in. or 23 in. racks, 1 in. and 1.25 in. hole spacing (brackets supplied) |
| Operating temperature |
-40 to +55°C |
| Weight |
About 10 lb |
| Color |
Off-white |
Installation notes
- Breakers or fuses are ordered separately
- NEBS level 3 verified, with zone 4 earthquake rating
- Torque input nuts to 5.5 ft-lb maximum
Related models
- NPTPA1105-V: vertical input terminals
- NPTPA1105-QC: quick-connect outputs
- NPTPA1605: full front access version
Documents
FAQ
Are fuses included?
No. Breakers or fuses are ordered separately.
What DC voltages does it support?
+24 V, +48 V, -24 V or -48 V DC input, with a range of 22 to 56 VDC.
How many fuse positions are there?
Two buses, each with 4 TPA positions (50 A max fuse) and 6 GMT positions (20 A max fuse).
Does it report blown fuses?
Yes. Each fuse position is monitored, and normal and alarm LEDs plus Form C relay contacts indicate an alarm for each bus.
