Terex Hi-Ranger XT55 Insulated Bucket Truck
Class E insulated. Fifty-five feet for live power line work.
55-ft Class E insulated aerial bucket truck. 600 lb two-person bucket, 40 kV dielectric rating, 32 ft horizontal reach, PTO drive. Rated for live power line work. Class 5/6 mount.
- 55 ft vertical reach (working height to 61 ft)
- 32 ft maximum horizontal reach
- Class E insulation — 40 kV dielectric rating per ANSI/SIA A92.2
- 600 lb two-person bucket capacity
- Fiberglass upper boom and bucket for full electrical isolation
- Annual dielectric test port — in-field testing without disassembly
- 360° continuous basket rotation with rotation lock
- PTO-powered hydraulics
- Hydraulic 4-point outriggers with interlock — boom blocked if outriggers not confirmed
- Dual emergency lower — at bucket and ground station
✓ In Stock — Ships in 5-10 business days
| Warranty | 3 years hydraulic, 5 years structural |
| Boom Type | Articulating + telescoping, fiberglass upper |
| Outriggers | Hydraulic 4-point with boom interlock |
| Boom Weight | 6,200 lbs (boom assembly) |
| Power Source | Truck PTO (hydraulic) |
| Vertical Reach | 55 ft |
| Working Height | 61 ft |
| Basket Rotation | 360° continuous with rotation lock |
| Bucket Capacity | 600 lbs (2-person) |
| Dielectric Test | Annual test port included |
| Horizontal Reach | 32 ft |
| Insulation Class | Class E — 40 kV per ANSI/SIA A92.2 |
| Mount Compatibility | Class 5 or 6 truck chassis |
Multi-angle views of the Terex Hi-Ranger XT55 Insulated Bucket Truck. Click any image to zoom.
Watch the Terex Hi-Ranger XT55 Insulated Bucket Truck in action — full installation and operation demo.
Aerial bucket trucks use a truck-mounted hydraulic boom and articulating system to position a work bucket at height. The PTO-driven system draws power from the truck engine — boom operation requires the truck engine to be running.
PTO Engagement
Before operating the boom, engage the Power Take-Off (PTO) via the in-cab switch or lever. The PTO connects the truck's transmission output to the hydraulic pump. The truck must be in neutral (auto) or PTO gear (manual) before PTO engagement.
Outrigger Setup
Deploy all four outriggers before raising the boom. Place outrigger pads under each foot on soft or uneven ground. Confirm all four indicator lights show "set" (or physically verify leveling) before raising the boom above horizontal.
Boom Controls
Both platform (bucket) controls and base controls operate the boom. Platform controls replicate all boom functions with the addition of a platform rotation control. The base controls include an emergency override for all boom functions in the event of power loss in the bucket.
Emergency Lowering
A manual hydraulic override at the base of the boom lowers the platform in the event of engine failure or hydraulic system failure. The operator in the bucket should wear a full-body harness with a lanyard connected to the bucket's D-ring anchor at all times.
⚙️ Outrigger Interlock
The boom cannot be raised above horizontal unless all four outriggers show confirmed ground contact. An electronic sensor in each outrigger pad signals the control system. A boom raised without full outrigger deployment is the primary cause of tip-overs in aerial truck incidents.
🛡️ Insulation Testing (Class E)
Insulated bucket trucks require annual dielectric testing per ANSI/SIA A92.2. The fiberglass upper boom and bucket are tested to their full rated voltage (40 kV for Class E). A test port on the unit allows in-field testing without removing components.
🔒 Platform Fall Arrest Anchor
A certified D-ring fall arrest anchor is welded into the bucket structure. All operators in the bucket must wear a full-body harness with the lanyard connected to this anchor at all times — OSHA 1910.67 requirement for aerial devices.
🚨 Emergency Lower / Override
A manual hydraulic override at the base of the boom lowers the platform to ground level independently of all electronic controls and truck power. Location and operation are marked clearly on the unit. Test this system at every pre-shift inspection.
How does this compare?
For any work on energized overhead distribution lines, insulation class is non-negotiable. The difference between an insulated bucket truck and a non-insulated one is not a preference — it is an OSHA 1910.269 requirement for energized line work. Class E at 40 kV covers all standard distribution voltage classes in North American utility systems (4 kV through 35 kV). The XT55 is the right choice for any utility, co-op, or contractor that runs energized lines. The annual dielectric test port built into the XT55 is an operational advantage: a test port allows in-field dielectric verification without removing components, cutting test turnaround from days to hours.
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