Armored Cable Cutter Guide

Armored cable cutters solve a different problem than large-conductor cutters

An armored cable cutter is designed to cut the metallic sheath around MC, AC, BX and similar cable without damaging the insulated conductors inside. That makes the blade-depth mechanism just as important as raw cutting force. A 1000 MCM hydraulic cutter and a 3/8-inch armored-cable cutter are both “cable cutters,” but they do completely different work.

Milwaukee 48-22-6111 vs Klein 53725

Cut-depth control is the compatibility feature to understand

Milwaukee uses a quick cut-depth switch between standard and reduced MC. Klein's instructions describe adjusting the depth when the armor does not fully separate and explicitly warn that it is critical to confirm the blade does not nick a wire after adjustment. In other words, a tool can be compatible with the cable type and still be incorrectly adjusted for the cable construction in front of you.

Replacement blade compatibility

Milwaukee's 48-22-6112 is the replacement blade for the 48-22-6111 and Milwaukee states that it also fits most armored-cable cutters. That broader statement is manufacturer-published, but “most” is not a model-by-model cross-reference. If using it outside the Milwaukee cutter, verify fit and operation before relying on it.

Klein's current replacement part is 53726SEN for the 53725. An older 53726 page is marked no longer in production, so current purchasing should use the manufacturer’s current 53726SEN reference.

How the rotary armor-cutting workflow differs from severing cable

These tools clamp around the armored cable and rotate a small cutting wheel through the metallic sheath. The goal is to split the armor cleanly enough to remove it while leaving the insulated conductors intact. That is why a cutter can be rated for 3/8-inch armored cable yet have no meaningful “MCM” conductor rating: it is cutting the armor, not sizing itself to sever the copper or aluminum conductor bundle.

Both current Milwaukee and Klein designs include a way to accommodate standard and reduced-diameter MC. That adjustment should be treated as part of setup, not as a one-time factory setting. After any depth change or blade replacement, follow the manufacturer's trial-cut procedure and inspect for conductor damage before continuing.

Do not substitute a general cable cutter for an armor cutter

A large scissor, ratchet or hydraulic conductor cutter can crush or sever the complete cable rather than score the armor at a controlled depth. Conversely, an armored-cable rotary cutter is not a substitute for a power cable cutter when the job is to sever large copper or aluminum conductors. Keeping these two tool families separate is especially important because retailers may place both under the same broad “cable cutter” category.

What to check when buying an armored cable cutter

• Supported armor types—MC, AC, BX, MCAP and/or Greenfield—rather than the generic word “armored.”
• Maximum cable diameter and whether reduced-diameter MC is addressed.
• How cut depth is selected or adjusted.
• Exact replacement-blade part number and whether current production has changed the suffix/catalog number.
• On-tool blade storage if that matters for service work.
• Condition of the drive axle, clamp and depth mechanism on a used tool; a fresh blade cannot correct worn or damaged alignment components.

Technical sources used for this guide

• Milwaukee 48-22-6111 Armored Cable Cutter — supported armor types, 3/8-inch capacity and cut-depth features.
• Milwaukee 48-22-6112 Armored Cable Cutter Replacement Blade — documented replacement and broader “most armored cable cutters” statement.
• Klein 53725 Armored and BX Cable Cutter — supported cable types, capacity and current replacement-blade reference.
• Klein 53726SEN BX Cutter Replacement Blade — current blade for 53725.
• Klein 53725 Instructions — cut-depth adjustment, blade storage/replacement and conductor-nick warning.