Multi-Purpose Clips
A pioneer and leader in the manufacture of alligator
clips, test leads, and banana
plugs.
While the founder of Mueller Electric Company invented alligator
clips, the company has since expanded its product lines into electric
test clips, test leads, test accessories, and board to board connectors,
sold to qualifying manufacturers and through leading authorized distributors.
Browse our wide variety of battery clips and automotive clips.
Heavy Duty Clip for Grounding Applications
Model # BU-11APN/BU-11APS/BU-11CPN/BU-11CPS
- Copper version has a lug connection
- Jaw opens 1.625" (41.3 mm) max
- Clip unmarked (BU-11APN/CPN) and marked positive (BU-11APS/CPS)
- Material: zinc-plated steel (11A) or solid copper (11C); Spring: steel
- Length: 6" (152.4 mm)
- Federal Spec: CID AA59466-011 (BU-11CPN)
- Rating: 100 Amps (11A) or 200 Amps (11C)
Insulator for Heavy Duty Clip
Model # BU-13-*
- Protective flexible vinyl insulator for 11A, 11C
- Material: PVC
- Length: 6.8" (173mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Heavy Duty Clip for Battery and Test Work
Model # BU-21APN/BU-21APS/BU-21CPN/BU-21CPS
- Crimp or screw connection; copper version (21C) equipped with removable copper lug; jaw opens 1.06" (27 mm) max; clip unmarked (BU-21APN/CPN) and marked positive (BU-21APS/CPS)
- Material: zinc-plated steel (21A) or solid copper (21C); Spring: steel
- Length: 4.11" (104.4mm)
- Federal Spec: CID AA59466-010 (BU-21CPN)
- Rating: 50 Amps (21A) or 100 Amps (21C)
Insulator for Heavy Duty Battery Test Clip
Model # BU-23-*
- Protective flexible vinyl insulator for 21A, 21C
- Material: PVC
- Length: 5" (127mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Heavy Duty Clip
Model # BU-24APN/BU-24APS
- Crimp or screw connection; jaw opens 0.75" (19 mm) max; clip unmarked (BU-24APN) and marked positive (BU-24APS)
- Material: zinc-plated steel; Spring: steel
- Length: 2.84" (72.23mm)
- Rating: 25 Amps
Automotive Clip
Model # BU-25/BU-25C
- Crimp or screw connection; jaw opens 0.75" (19 mm) max; teeth mesh on three sides of the jaw
- Material: zinc-plated steel (BU-25) or solid copper (BU-25C); Spring: steel
- Length: 3" (72.6mm)
- Federal Spec: CID AA59466-009 (BU-25C)
- Rating: 40 Amps (BU-25) or 75 Amps (BU-25C)
Insulator for Automotive Clip
Model # BU-26-*
- Protective flexible vinyl insulator for 24A, 25, 25C
- Material: PVC
- Length: 3.88" (98.4 mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
General Purpose Clip
Model # BU-27/BU-27C
- Crimp or screw connection;
- Jaw opens 0.625" (16 mm) max
- Material: zinc-plated steel (BU-27) or solid copper (BU-27C); Spring: steel
- Length: 2.44" (61.9mm)
- Federal Spec: CID AA59466-008 (BU-27C)
- Rating: 20 Amps (BU-27) or 40 Amps (BU-27C)
Geophone Clip
Model # BU-27CG/BU-27CGW
- Crimp or screw connection; jaw opens 0.625" (16 mm) max; curved jaws clip on to seismograph rings
- Material: solid copper; Spring: steel
- Length: 2.4" (61.1mm)
- Rating: 40 Amps
General Purpose/Geophone Clips
Model # BU-29-*
- Protective flexible vinyl insulator for 27, 27C, 27CG, 27CGW
- Material: PVC
- Length: 3.5" (88.9mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Welding Clip
Model # BU-33C
- Lug connection
- Jaw opens 1.81" (46 mm) max
- Material: solid copper
- Length: 7.75" (196.8mm)
- Federal Spec: CID AA59466-012
- Rating: 300 Amps
Insulator for Welding Clip
Model # BU-35-*
- Protective flexible vinyl insulator for 33C
- Material: PVC
- Length: 8.75" (222mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Pee-Wee Clip
Model # BU-45/BU-45C
- Screw or crimp connection
- Jaw opens 0.31" (7.9 mm) max
- Material: zinc-plated steel (BU-45) or solid copper (BU-45C)
- Length: 1.53" (38.89mm)
- Federal Spec: CID AA59466-006 (BU-45C)
- Rating: 5 Amps (BU-45) or 10 Amps (BU-45C)
Insulator for Pee-Wee Clip
Model # BU-47
- Protective flexible vinyl insulator for 45, 45C
- Material: PVC
- Length: 2.02" (51.2 mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Automotive Analyzer Clip
Model # BU-48B/BU-48C
- Screw or crimp connection
- Jaw opens 0.5" (12.7 mm) max
- Teeth mesh on three sides of the jaw
- Material: zinc-plated steel (BU-48B) or solid copper (BU-48C)
- Length: 2" (50.8mm)
- Federal Spec: CID AA59466-007 (BU-48C)
- Rating: 10 Amps (BU-48B) or 20 Amps (BU-48C)
Automotive Analyzer Clip
Model # BU-48B2E
- Screw or crimp connection
- Jaw opens 0.5" (12.7 mm) max
- Material: zinc-plated steel
- Length: 2" (50.8mm)
- Rating: 10 Amps
Insulator for Automotive Analyzer Clip
Model # BU-49-*
- Protective flexible vinyl insulator for 48B, 48B2E, 48C, 50C, 51C, 55, 95
- Material: PVC
- Length: 2.56" (65.09mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Meter Testing Clip With Needle
Model # BU-50C
- Solid copper clip with beryllium copper piercing needle in the top jaw
- Jaw opens 0.5" (12.7 mm) max
- Material: Solid copper
- Length: 2.28" (57.12mm)
- Federal Spec: CID AA59466-013
- Rating: 20 Amps
Meter Testing Clip
Model # BU-51C
- Same as BU-50C except without insulation piercing needle
- Jaw opens 0.5" (12.7 mm) max
- Material: Solid copper
- Length: 2.28" (57.12mm)
- Rating: 20 Amps
Economy Clip
Model # BU-55
- Screw or crimp connection
- Jaw opens 0.44" (11.1 mm) max
- Material: zinc-plated steel
- Length: 2" (50.8mm)
- Rating: 10 Amps
Grounding Clamp
Model # BU-58
- Attaches to pipe up to 1 3/8" outer diameter
- Material: zinc-plated steel
- Length: 2.31" (58.75mm)
- Rating: 50 Amps
Insulator
Model # BU-74-*
- Protective flexible vinyl insulator for 55
- Accepts 0.27" (7 mm) ignition wire
- Material: PVC
- Length: 2.875" (73mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
Insulator for General Purpose/Geophone Clips
Model # BU-90-*
- Protective flexible vinyl insulator for 27, 27C, 27CG and 27CGW
- Material: PVC
- Length: 3.375" (92mm)
- *Std. Colors: -0 Black, -2 Red, -4 Yellow, -5 Green, -6 Blue, -9 White
