NEA 1120-05 Pin Puller
Ensign-Bickford Aerospace & Defense (EBAD)
The EBAD NEA 1120-05 Pin Puller is a non-pyrotechnic Hold Down & Release Mechanism (HDRM) designed for spacecraft applications. It utilizes EBAD’s patented split spool technology, which is also found in their other HDRMs. The device operates with a spring-loaded plunger restrained by a split-spool and fuse wire. The spool halves are held together by […]
Key figurescomparable across the catalogue
- Mass
- 0.047 kg
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Mass
- 47 g (1.66 oz) max
- Side Load
- 20 lbf (88.9 N)
- Function Time
- 50 ms max @ 3.0 A
- Emitted Shock
- <1,000 g’s
- Nominal Actuation Current
- 4 Amps for 25 ms
- Resistance
- .95 to 1.6 Ω @ 23°C
- Insulation Resistance
- >100 MΩ @ 250 VDC
- No-Fire Limit
- 210 mA for 5 min @ Ambient
- Pull Force (Beginning of Travel)
- Beginning: 14.2 lbf (63.2 N)
- Pull Force (End of Travel)
- End: 6.0 lbf (26.6 N)
- Pull Stroke
- 0.315 in (8.0 mm)
- Field-Refurbishable
- With additional fuse wire assemblies (max 10 times)
- Non-Operational Pre-Actuation Temperature
- -51°C to +43°C (-60°F to +110°F)
- Operational Temperature
- -51°C to +43°C (-60°F to +110°F)
- Non-Operational Post-Actuation Temperature
- -51°C to +43°C (-60°F to +110°F)
- MASS
- 1.66 oz [47 g] MAX
- NUMBER OF WIRES
- 2 TOTAL (2 PRIMARY ONLY)
- CABLE LENGTH
- 30.0 in [STANDARD LENGTH]
- OPERATIONAL CURRENT
- 3 Amps FOR 50ms
- RESISTANCE
- 0.95 to 1.6Ω @ 23°C
- INSULATION RESISTANCE
- >100 MΩ @ 250 VDC
- NO FIRE LIMIT
- 210 mA FOR 5 MIN @ AMBIENT
- PULL FORCE (BEGINNING OF TRAVEL)
- 14.2 lbf [6.5 Kg / 63.5 N] MIN
- PULL STROKE
- 0.315in [8.0mm]
- SIDE LOAD
- 35 lbf [15.9 kg / 155.7 N] MIN
- ACTUATION TIME
- 50 ms MAX @ 3.0 Amps
- RE-USABLE
- MANUAL REPLACEMENT OF FUSE WIRE
- NON-OPERATIONAL PRE-ACTUATION TEMPERATURE
- -76°F TO +230°F [-60°C TO +110°C]
- OPERATIONAL TEMPERATURE
- -76°F TO +230°F [-60°C TO +110°C]
- NON-OPERATIONAL POST-ACTUATION TEMPERATURE
- -76°F TO +230°F [-60° C TO +110°C]
- RANDOM VIBRATION
- 29.4 Grms
About
The EBAD NEA 1120-05 Pin Puller is a non-pyrotechnic Hold Down & Release Mechanism (HDRM) designed for spacecraft applications. It utilizes EBAD’s patented split spool technology, which is also found in their other HDRMs. The device operates with a spring-loaded plunger restrained by a split-spool and fuse wire. The spool halves are held together by a winding of restraining wire, which terminates in a fuse wire connected to electrical terminals. When sufficient electrical current is passed through the fuse wire, it heats up and breaks under tension, allowing the restraining wire to unwind, separating the spool halves, and releasing the preloaded plunger. This actuation method is simple, reliable, and forms the basis for other EBAD products like Battery Cell Bypass Switches and Non-Pyrotechnic Valves. Key features include extremely low release shock, an extended operating temperature range, compatibility with pyrotechnic initiation circuitry, range safety friendliness, space-rated materials, and field refurbishability with spare initiators and a reset tool. Typical applications include antennas, scientific instruments, solar arrays, reflectors, satellite and spacecraft payloads, booms and masts, stage separation, and caging mechanisms. The pin puller is fully vented and vacuum compatible.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.