The Scorpion HBR-20P is a Solid -State Electronic Permissible Blasting Machine: MSHA Approval No.: 16E-15. The unit is exceptionally rugged and specially designed for the harsh mining environment it was meant to serve. It is completely sealed making it waterproof and impervious to dust, dirt, sand, and debris. It features EIT’s specially developed Heavy-Duty Push Down Binding Posts for quick and secure lead line attachment. The HBR-20P incorporates 2 recessed covered pushbutton switches for Charge and Fire operations. For safety, the operator must depress and maintain the “Charge” switch while the unit is indicating “Ready” to proceed to “Fire”, and in that order. This two-switch procedure ensures the intent to initiate. For the added safety of operations in coal and gassy mines, per MSHA regulations regarding Permissible Blasting Machines, the HBR-20P shunts the electrical output of the unit approximately 4.5 to 8 milliseconds after current is detected. The Scorpion HBR-20P offers rapid-charging and is engineered so that it may only fire when fully charged and maintaining verified armed specifications. Four AA batteries provide a lengthy service of Charge/Fire cycles. The battery pack loads smoothly through the side of the unit into a waterproof compartment secured in place by an easy-on/easy-off Battery Cap. The Scorpion HBR-20P incorporates 2 stainless steel D-Ring attachment points should the user opt to attach a strap or other carrying accessory.  

Scorpion Solid‐State Electronic Permissible Blasting Machine

MSHA Approval No.: 16E‐15


FIRING ENERGY:350 VDC @ 6.125Joules
FIRING CAPABILITY:Permissible Electric Blasting Caps
FIRING CAPACITY:20 Iron Leg Wire (16′) Electric Detonators (short delay) in a Single Series
SHUNT TIMING:4.5 to 8mS (Avg 6mS )
FIRE CIRCUIT:Locked out unless full charge is available
ARMED INDICATOR:High visibility green LED
OUTPUT:Binding Posts shunted internally
ABORT:When ‘Charge’ switch is released before ‘Detonate’ unit is returned to stand-by condition
FIRING:Requires sequenced 2 switch operation
DIMENSION:3″wide x 2″thick x 6″high (7.6cmx 5cmx 15.2cm)
WEIGHT:28 oz w /battery pack (794g)
HARDWARE:Brass, Nylon, Stainless Steel, Rubber
BATTERIES:4 Replaceable AA cells (HD alkaline recommended )
LIFE:~200+ Charge/Fire Cycles typical
CONNECTION:EIT’s quick-connect HD Output Binding Posts
SWITCHES:Recessed with rugged waterproof boots
BATTERY:Battery Pack loads smoothly through side of unit and is secured in place by easy-on/off battery cap
WARRANTY:Lifetime warranty against manufacturing defects
Superior Field Reliability

Scorpion devices are built with the highest quality electronics and components so you can count on them to work in even the most unforgiving environments. Engineered for long life, Scorpion devices continue to provide reliable performance for decades in the field where other manufacturers break down after only months.

Quick and easy battery replacement in 1 step

Scorpion units are designed with a waterproof battery compartment for quick and easy replacement. No need to remove screws and, as with competitors machines, expose the wiring and internal components just to change the batteries. EIT developed the one step on and off compartment cover to let you replace a battery anywhere- no tools required.