Brymen BCL4MS4 silicone test leads are designed for connecting multimeters to interchangeable test accessories. With safety ratings of CAT IV 1000V and CAT III 1500V AC/DC, they are suitable for professional electrical testing, including measurements in 1500V DC photovoltaic systems.
The silicone insulation features a white inner wear-indicator layer, making damage to the outer insulation easier to detect. Standard 4 mm plugs with lantern spring contacts help minimise wear on connection terminals. Straight plugs accommodate detachable accessories, while right-angle plugs provide convenient connections to measuring instruments.
Key Features
- Safety ratings: CAT IV 1000V / CAT III 1500V AC/DC
- Silicone insulation: White inner layer provides a visual indication of insulation wear.
- 4 mm connectors: Lantern spring design helps reduce scratches on terminals.
- Current capacity: 10A continuous; over 10A up to 20A for a maximum of 30 seconds, followed by a 15-minute cooling interval.
- Operating temperature: -10°C to +50°C
- Safety compliance: UL Listed, certified to IEC 61010-031.
- Set contents: One red and one black test lead.

Fuse 0.63A/1000V 6x30mm
Test lead for voltage testers (black)
BRUA-19X USB kit for BM197 / BM195 / BM198PV
BMH-01 Magnetic Hanger
Silicone test leads BL21S2-T4SC Brymen
Fuse 0.44A/1000V 10x38 mm
BU-86X USB kit for BM52x / BM82x / BM86x
Test tip for voltage testers (red)
Fuse 0.25A/1000V 6x32 mm
Fuse 11A/1000V 10x38 mm 
