HB-55 Electric Blasting Machine
MTi GROUP's HB-55 electric blasting machine has a Circuit Continuity Indicator that guarantees reliable connections, while its durable, waterproof design ensures unstoppable performance. Additionally, it features dual safety switches and a Charge/Fire lifecycle of ~300 per charge.
Live pricing and same-day-ship priority once you're in. Setup takes 60 seconds — we just need to confirm you're a real operation.
- P.O.
Why HB-55 Electric Blasting Machine
Secure lead line attachment
Spring-loaded posts grip your lead wires tight. Connect and fire with confidence.
Why it matters: No loose connections at the critical moment. You get a clean fire the first time.
Immediate charge response
Capacitor reaches full energy within seconds of pressing charge. No waiting.
Why it matters: Minimizes the time between hooking up and firing. Less exposure at the face for your team.
Replaceable 9V battery
Standard 9V battery powers the unit. Swap it anywhere, anytime.
Why it matters: Keep a spare in your pocket. Zero chance of a shift ending because of a dead proprietary cell.
Water and dirt proof
Sealed against water and fine dust. Survives the blast site environment.
Why it matters: Works reliably in rain, slurry splash, and dusty conditions without hesitation.
Easy belt loop carry
Built-in belt loop keeps the machine on your hip while you walk the face.
Why it matters: Both hands free for climbing, connecting wires, and moving safely around the bench.
Electric Initiation
Fires up to 55 standard electric detonators in series. Proven capacitor-discharge technology.
Why it matters: Covers most mid-size blast rounds with a single compact machine. One unit, one shot, done.
Built for the bench.
Proven electric initiation
Reliable, field-tested electric blasting machine for surface and underground operations.
Bench-ready
Sized and weighted for one-operator handling between holes and the firing point.
Specs, storage & more.
| FIRING ENERGY | FIRING CAPACITY: |
| FIRE CIRCUIT | ARMED INDICATOR: |
| DETECTION | TEST SIGNAL: INDICATION: |
| FIRING | CONTINUITY: |
| DIMENSION | WEIGHT: CASE MATERIAL: HARDWARE: INGRESS: OPERATING TEMP: STORAGE TEMP: COLORS: |
| BATTERY | LIFE: |
| CONNECTION | SWITCHES: CARRYING: BATTERY: |
| OUTPUT | ABORT: |
| Battery type | 9V |
| Output voltage | 225 |
| Output energy (joules) | 4 |
| Max resistance (ohms) | 135 |
| Rated cap count | 62 |
| Firing cycles per battery | ~300+ |
| Initiation type | Electric |
| Length | 9" |
| Width | 5" |
| Height | 3" |
| Weight | 1lbs |
| Waterproof | Yes |
| MSHA approved | No |
| CE approved | No |
| Pack size | Each |
Pick the right machine.
Every shot.
Detailed Specifications
 HB-10 Electric Initiator
|
 HB-55 Electric Blasting Machine
|
 S-355 Compact Electric Blasting Machine
|
 HB-SBS Blasting Machine - Dual Initiation
|
 HB-320 Rugged Waterproof Blasting Machine
|
 S-412 Blasting Machine with Circuit Continuity
|
 HBR-20P Blasting Machine - MSHA Approved
|
 S-2 Non-Electric Blasting Machine
|
 S-3 Powerful Blasting Machine
|
 S-27 Blasting Machine
|
 HR-3 Mechanical Starter
| |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Initiation Type | Electric | Electric | Electric | Dual Initiation | Electric | Electric | Electric | Non-Electric | Dual Initiation | Non-Electric | Mechanical |
| Firing Cycles Per Battery | ~300+ | ~300+ | ~300+ | ~250+ | ~150+ | ~250+ | ~200+ | — | ~250+ | — | — |
| Battery Type | 9V | 9V | 9V | 9V | AA | 9V | AA | — | 9V | — | — |
| Output Volts DC | 150 | 225 | 350 | 450 | 330 | 400 | 350 | 400 x 2 | 400 | 400 | 400 |
| Output Joules | 1.25 | 4 | 5 | 5 | 19 | 12 | 6.125 | 12 x 2 | 12 | 12 | 12 |
| Initiation Resistance (ohms) | 50 | 135 | 230 | 250 | 220 | 240 | N/A | — | 240 | — | — |
| Estimated Single Series Caps | 20 | 62 | 110 | 120 | 105 | 115 | 20 | — | 115 | — | — |
| Waterproof | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — |
| MSHA Approved | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ |
| Rapid Charging | ✓ | ✓ | ✓ | ✗ | ✓ | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ |
| Detachable Belt Loop | ✓ | ✗ | ✓ | ✗ | ✗ | ✓ | ✓ | ✓ | ✓ | ✗ | ✗ |
| Continuity Indicator | ✗ | ✓ | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ | ✓ | ✗ | ✗ |
| CE Approved | ✓ | ✗ | ✗ | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✗ |
Swipe to see all columns →
Pick the HB-10 when you are firing small construction shots and want a compact, hand-held electric initiator. 50-ohm capacity, 9V battery, fits on your belt. Roughly 20 caps per single series.
Pick the HB-55 for mid-sized electric shots that need built-in circuit continuity verification. 135 ohm capacity, fires roughly 62 caps in single series.
Pick the S-355 when you need 230-ohm capacity in a compact form factor. Continuity indicator built in, rapid charge, fires roughly 110 caps per single series.
Pick the HB-SBS when crews switch between electric and shock-tube circuits. Auto-detects what is connected. 250-ohm electric capacity, fires roughly 120 caps single series.
Pick the HB-320 for large production circuits and harsh environments. 220-ohm capacity, 19-joule output, AA-battery powered, CE approved. Roughly 105 caps single series.
Pick the S-412 for large electric shots where pre-fire continuity verification is critical. 240-ohm capacity, continuity indicator, fires roughly 115 caps single series.
Pick the HBR-20P for underground coal and gassy metal/non-metal mines. MSHA-approved permissible unit, auto-shunts output 4.5–8 ms after firing. AA battery, roughly 20 caps single series.
Pick the S-2 for shock-tube firing on large surface benches. Two 400-volt outputs, 12 joules each. Immune to stray current and RF energy.
Pick the S-3 when you need a high-energy dual-initiation machine. 12-joule output, 240-ohm capacity, continuity indicator. Fires roughly 115 caps single series.
Pick the S-27 as a robust non-electric shock-tube firing device. 400-volt, 12-joule output. Heavy-duty build for production benches.
Pick the HR-3 when you want a battery-free mechanical starter for shock-tube initiation. No electronics, no batteries, no charging — a reliable backup for any non-electric circuit.
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